Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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(1 point) The basic SI unit of length is the
a. | meter. | b. | foot. | c. | inch. | d. | mile. |
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2.
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(1 point) Speed equals distance divided by
a. | time. | b. | velocity. | c. | size. | d. | motion. |
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3.
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(1 point) If a bicyclist travels 30 kilometers in
two hours, her average speed is
a. | 30 km/h. | b. | 60 km/h. | c. | 15
km/h. | d. | 2 km/h. |
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4.
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(1 point) A classroom measures 4.33 meters wide. How
wide is the classroom in centimeters?
a. | 0.433 cm | b. | 43.3 cm | c. | 433
cm | d. | 4,330 cm |
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5.
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(1 point) Kilo- is a prefix that means
a. | one thousandth | b. | one hundredth | c. | one
hundred | d. | one thousand |
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6.
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(1 point) A car travels 85 km in the first hour of a
trip. The car continues to travel for 2 more hours and travels 200 km. What was the average speed of
the car for the trip?
a. | 39 km/h | b. | 95 km/h | c. | 115
km/h | d. | 285 km/h |
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7.
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(1 point) The average, year-after-year conditions of
temperature, precipitation, winds, and cloud in an area are known as its
a. | climate. | b. | weather. | c. | global
warming. | d. | seasons. |
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8.
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(1 point) The tendency of a moving object to
continue moving in a straight line or a stationary object to remain in place is called
a. | orbital speed. | b. | mass. | c. | inertia. | d. | gravity. |
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9.
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(1 point) The point beneath Earth’s surface
where rock breaks under stress and triggers an earthquake is called the
a. | syncline. | b. | footwall. | c. | epicenter. | d. | focus. |
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10.
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(1 point) Geologists know that wherever plate
movement stores energy in the rock along faults,
a. | earthquakes are not likely. | b. | earthquakes are likely. | c. | an earthquake is
occurring. | d. | an earthquake could never occur. |
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11.
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(1 point) The ability to do work is called
a. | velocity. | b. | energy. | c. | conversion. | d. | friction. |
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12.
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(1 point) Energy is measured in units called
a. | joules. | b. | pounds. | c. | meters. | d. | horsepower. |
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13.
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(1 point) The energy associated with motion is
called
a. | kinetic energy. | b. | elastic potential energy. | c. | gravitational
potential energy. | d. | nuclear energy. |
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14.
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(1 point) Kinetic energy increases as
a. | mass increases and velocity decreases. | b. | mass decreases and velocity
increases. | c. | both mass and velocity increase. | d. | both mass and velocity
decrease. |
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15.
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(1 point) The total potential and kinetic energy of
the particles in an object is called
a. | mechanical energy. | b. | thermal energy. | c. | chemical
energy. | d. | electrical energy. |
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16.
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(1 point) When you rub your hands together on a cold
day, you use friction to convert
a. | mechanical energy into thermal energy. | b. | thermal energy into nuclear
energy. | c. | nuclear energy into electrical energy. | d. | electrical energy into electromagnetic
energy. |
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17.
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(1 point) Which of the following has kinetic
energy?
a. | a rock poised for a fall | b. | an archer’s bow that is drawn
back | c. | a rolling bowling ball | d. | a car waiting at a red
light |
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18.
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(1 point) The law of conservation of energy states
that when one form of energy is converted into another,
a. | energy is destroyed in the process. | b. | no energy is destroyed in the
process. | c. | energy is created in the process. | d. | some amount of energy cannot be accounted
for. |
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19.
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(1 point) Which of the following is an example of
exerting a force?
a. | a child running through a field | b. | a train speeding down a
track | c. | a carpenter hammering a nail | d. | an airplane soaring through the
sky |
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20.
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(1 point) What happens when two forces act in the
same direction?
a. | They cancel each other out. | b. | The stronger one prevails. | c. | They add
together. | d. | Their sum divided by two is the total force. |
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21.
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(1 point) The greater the mass of an object,
a. | the easier the object starts moving. | b. | the greater its inertia. | c. | the more balanced it
is. | d. | the more space it takes up. |
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22.
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(1 point) The force that one surface exerts on
another when the two rub against each other is called
a. | friction. | b. | acceleration. | c. | inertia. | d. | gravity. |
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23.
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(1 point) Which of the following is an example of
rolling friction?
a. | your shoes on a sidewalk as you walk | b. | bike tires on the road as you
ride | c. | a boat on the water as it sails | d. | two hands rubbing
together |
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24.
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(1 point) Which of the following is an example of
increasing friction intentionally?
a. | waxing skis | b. | adding grease to gears on a
bike | c. | throwing sand on an icy driveway | d. | oiling a squeaky
door |
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25.
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(1 point) According to Newton’s third law of
motion, when a hammer strikes and exerts force on a nail, the nail
a. | creates a friction with the hammer. | b. | disappears into the wood. | c. | exerts an equal
force back on the hammer. | d. | moves at a constant
speed. |
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26.
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(1 point) The SI unit for force is the
a. | newton. | b. | meter. | c. | kilogram. | d. | pound. |
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27.
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(1 point) Balanced forces acting on an object
a. | always change the object’s motion. | b. | sometimes change the
object’s motion. | c. | never change the object’s
motion. | d. | are not related to motion. |
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28.
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(1 point) All of the following are examples of good
laboratory preparation EXCEPT
a. | knowing the safety and first-aid procedures. | b. | reading through the
entire lab before starting it. | c. | always following your teacher’s
instruction. | d. | rushing through the steps in the laboratory. |
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29.
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(1 point) What is the correct order (starting from
the surface) of Earth’s layers?
a. | crust, outer core, inner core, mantle | b. | mantle, outer core, inner core,
crust | c. | crust, mantle, outer core, inner core | d. | outer core, inner core, crust,
mantle |
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30.
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(1 point) The geological theory that states that
pieces of Earth’s lithosphere are in constant, slow motion is the theory of
a. | subduction. | b. | plate tectonics. | c. | deep-ocean
trenches. | d. | sea-floor spreading. |
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31.
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(1 point) A rift valley forms at a
a. | convergent plate boundary | b. | divergent plate boundary. | c. | transform
boundary. | d. | deep-ocean trench. |
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32.
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(1 point) The place where two plates come together
is known as a
a. | transform boundary. | b. | divergent boundary. | c. | convergent
boundary. | d. | rift valley. |
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33.
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(1 point) The two most abundant gases in the
atmosphere are
a. | carbon dioxide and oxygen. | b. | carbon dioxide and
nitrogen. | c. | nitrogen and oxygen. | d. | nitrogen and
hydrogen. |
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34.
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(1 point) From Earth to space, the main layers in
our atmosphere are:
a. | troposphere, stratosphere, mesosphere, thermosphere. | b. | stratosphere,
troposphere, mesosphere, thermosphere. | c. | mesosphere, troposphere, stratosphere,
thermosphere. | d. | thermosphere, troposphere, stratosphere, mesosphere. |
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35.
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(1 point) The layer of our atmosphere in which
weather occurs is the
a. | troposphere. | b. | stratosphere. | c. | mesosphere. | d. | exosphere. |
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36.
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(1 point) Radio waves are reflected back to Earth by
particles in the
a. | exosphere. | b. | ionosphere. | c. | troposphere. | d. | mesosphere. |
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37.
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(1 point) Tall, cone-shaped mountains in which
layers of lava alternate with layers of ash are called
a. | shield volcanoes. | b. | cinder cone volcanoes. | c. | composite
volcanoes. | d. | lava plateaus. |
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38.
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(1 point) For work to be done on an object,
a. | some force need only be exerted on the object. | b. | the object must move
some distance as a result of a force. | c. | the object must move, whether or not a force is
exerted on it. | d. | the object must not move. |
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39.
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(1 point) If you exert a force of 20 newtons to push
a desk 10 meters, how much work do you do on the desk?
a. | 200 joules | b. | 30 joules | c. | 10
joules | d. | 100 joules |
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40.
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(1 point) Work is measured in
a. | meters. | b. | pounds. | c. | joules. | d. | newtons. |
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41.
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(1 point) What do machines do?
a. | change the amount of force you exert or the distance over which you exert the
force | b. | increase the amount of work that is done | c. | decrease the amount
of work that is done | d. | eliminate
friction |
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42.
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(1 point) A ramp is an example of a simple machine
called a(n)
a. | inclined plane. | b. | wedge. | c. | lever. | d. | pulley. |
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43.
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(1 point) Which of these is an example of a
third-class lever?
a. | scissors | b. | pliers | c. | fishing
pole | d. | nutcracker |
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44.
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(1 point) A machine that utilizes two or more simple
machines is called a
a. | combination machine. | b. | compound machine. | c. | mechanical
machine. | d. | mixed machine. |
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45.
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(1 point) One example of a compound machine is
a
a. | door. | b. | pliers. | c. | bicycle. | d. | shovel. |
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46.
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(1 point) Which of these could be considered an
inclined plane wrapped around a cylinder?
a. | lever | b. | screw | c. | wheel and
axle | d. | pulley |
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47.
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(1 point) The fixed point that a lever pivots around
is called the
a. | axle. | b. | pulley. | c. | gear. | d. | fulcrum. |
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48.
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(1 point) The power of a light bulb that converts
electrical energy at a rate of 100 joules per second is
a. | 50 watts. | b. | 200 watts. | c. | 100
watts. | d. | 40 watts. |
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49.
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(1 point) Power is measured in units called
a. | joules. | b. | pounds. | c. | watts. | d. | newtons. |
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50.
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(1 point) Convert 1,250 millimoles to moles.
a. | 125 mol | c. | 1.25 mol | b. | 12.5 mol | d. | 0.125 mol |
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51.
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(1 point) Which of the following is equal to
5,800,000,000 cm?
a. | 5.8 ´ 109 cm | c. | 5.8 ´ 108 cm | b. | 58 ´
109 cm | d. | 58 ´ 107 cm |
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52.
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(1 point) An airplane is flying at 635 km per hour
at an altitude of 35,000 m. It is currently over Kansas and is approximately 16 minutes ahead of its
scheduled arrival time. What is its velocity?
a. | 635 km/h | b. | 16 m/min | c. | 35 000
m/s | d. | This cannot be determined without further information about its
direction. |
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53.
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(1 point) The average speed of a runner who runs
500.0 m in 1.6 min is
a. | 0.19 m/s. | c. | 96 m/s. | b. | 5.2 m/s. | d. | 312 m/s. |
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54.
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(1 point) A pitcher throws a baseball to home plate,
a distance of 60.5 ft. The ball reaches home plate in 0.63 s. What is the velocity of the
ball?
a. | 38 ft/s | c. | 96 ft/s | b. | 38 ft/s toward home plate | d. | 96 ft/s toward home
plate |
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55.
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(1 point) The law that states that the unbalanced
force acting on an object equals the object’s mass times its acceleration is
a. | Newton’s first law of motion. | b. | Newton’s second law of
motion. | c. | Newton’s third law of motion. | d. | the law of conservation of
momentum. |
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56.
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(1 point) One newton is the force that can give a
mass of 1 kg an acceleration of
a. | 1 m/s. | c. | 1 m/s2. | b. | 9.8 m/s. | d. | 9.8
m/s2. |
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57.
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(1 point) What unbalanced force is needed to give a
976 kg vehicle an acceleration of 2.50 m/s2?
a. | 3.90 ´ 102 N | c. | 2.44 ´ 103 N | b. | 3.90 ´
102 lb | d. | 2.44
´ 103 lb |
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58.
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(1 point) If an equal force is applied to two cars
of equal mass, Car A and Car B, Car A will have _____ acceleration as (than) Car B.
a. | the same | c. | less | b. | greater | d. | the opposite |
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59.
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(1 point) Which is an example of projectile
motion?
a. | a rolling bowling ball | c. | a balloon rising in the air | b. | a dart thrown at a
dart board | d. | a high-speed
train accelerating |
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60.
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(1 point) What is the momentum of a 255 g apple
falling at 16.0 m/s?
a. | 4.08 m/s2 downward | c. | 15.9 m/s2
downward | b. | 4.08 kg • m/s downward | d. | 15.9 kg • m/s downward
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61.
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(1 point) Calculate the velocity of a 90.5 kg man
running south with a momentum of 389 kg • m/s.
a. | 0.233 m/s south | c. | 23.3 m/s south | b. | 4.30 m/s south | d. | 35.2 m/s south |
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62.
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(1 point) Whenever an object is standing still,
which value is always zero?
a. | speed | c. | momentum | b. | velocity | d. | All of the
above |
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63.
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(1 point) A first-class lever has the
a. | fulcrum at one end and the output force between the fulcrum and the input
force. | b. | fulcrum at one end and the input force between the fulcrum and the output
force. | c. | fulcrum in the middle. | d. | input force in the
middle. |
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64.
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(1 point) A pair of tweezers is
a. | a first-class lever. | b. | a compound machine made of two third-class
levers. | c. | a compound machine made of two second-class levers. | d. | a kind of
wedge. |
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65.
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(1 point) How much power is required to lift a 30.0
N chair 0.20 m in 2.0 s?
a. | 1.0 W | c. | 12 W | b. | 3.0 W | d. | 15 W |
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66.
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(1 point) Lifting a car using a car jack is easier
because it requires
a. | less force. | c. | less time. | b. | less work. | d. | None of the
above |
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67.
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(1 point) What are the two families of simple
machines?
a. | wedge and compound | c. | inclined plane and lever | b. | first class and
second class | d. | pulley and
screw |
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68.
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(1 point) Calculate the gravitational potential
energy relative to the ground when an 82 kg person climbs to the top of a 2.0 m stepladder.
a. | 164 J | c. | 402 J | b. | 3.3 ´
102 J | d. | 1.6 ´ 103 J |
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69.
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(1 point) What is the kinetic energy of a 1.40 kg
discus with a speed of 22.5 m/s?
a. | 15.8 J | c. | 354 J | b. | 31.5 J | d. | 709 J |
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70.
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(1 point) A dog running at a speed of 12 m/s has
1,080 J of kinetic energy. What is the mass of the dog?
a. | 7.5 kg | c. | 30 kg | b. | 15 kg | d. | 45 kg |
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71.
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(1 point) An astronaut with a mass of 91 kg is 0.30
m above the moon’s surface. The astronaut’s potential energy is 46 J. Calculate the
free-fall acceleration on the moon.
a. | 0.15 m/s2 | c. | 6.6 m/s2 | b. | 1.7 m/s2 | d. | 9.8
m/s2 |
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72.
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(1 point) An object has a kinetic energy of 810 J
after falling a certain distance. If the mass of the object is 20 kg, what is the speed of the object
at this time?
a. | 10 m/s | c. | 8 m/s | b. | 9 m/s | d. | 7 m/s |
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73.
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(1 point) Earth’s lithosphere is composed
of
a. | the crust only. | b. | the mantle only. | c. | the crust and the
upper portion of the mantle. | d. | the mantle and the upper portion of the outer
core. |
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74.
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(1 point) Where do most earthquakes occur?
a. | along convergent boundaries | b. | at vents in Earth’s
crust | c. | near hot spots | d. | along shifting plate
boundaries |
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75.
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(1 point) A divergent boundary occurs where two
plates
a. | move toward each other. | c. | move past each
other. | b. | move away from each other. | d. | move over each other. |
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76.
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(1 point) Almost all weather occurs in the
a. | troposphere. | c. | mesosphere. | b. | stratosphere. | d. | thermosphere. |
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77.
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(1 point) In the water cycle _____ occurs after
condensation.
a. | evaporation | c. | transpiration | b. | precipitation | d. | saturation |
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78.
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(1 point) Differences in _____ cause wind.
a. | dew points | c. | atmospheric humidity | b. | Earth’s rotation | d. | air pressure |
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79.
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(1 point) Holding a 25-N bag of sugar 1 meter above
the floor requires how much work?
a. | 25 J | c. | 0 J | b. | 25 N/m | d. | 0 N/m |
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80.
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(1 point) A large truck and a small car are moving
at the same speed. The truck has greater kinetic energy because its ____________________ is
greater.
a. | gravity | c. | accelleration | b. | mass | d. | potential
energy |
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81.
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(1 point) The condition of Earth’s atmosphere
at a particular time and place is known as ____________________.
a. | climate | c. | weather | b. | lithosphere | d. | front |
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82.
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(1 point) How much work is done in lifting a 25-N
bag of sugar 2 meters?
a. | 50 Watts | c. | 12.5 J | b. | 12.5 Watts | d. | 50 J |
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83.
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(1 point) Use the diagram to answer the
question.  How far did Kathy jog in the first 4
minutes?
a. | 0.6 km | c. | 60 km | b. | 6 km | d. | 600 km |
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84.
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(1 point) Use the diagram to answer the
question.  How long after Kathy started jogging
did Rachel begin jogging?
a. | 2 s | c. | 10 min | b. | 120 s | d. | 7 min |
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85.
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(1 point) Use the diagram to answer the
question.  What is Kathy’s average
speed?
a. | 150 m/s | c. | 300 m/s | b. | 300 m/min | d. | 150 m/min |
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86.
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(1 point) Use the diagram to answer the
question.  What happened to the speed of the
ball during the final two seconds?
a. | It remained constant. | c. | Not enough information to determine. | b. | It slowed
down. | d. | It sped
up. |
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87.
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(1 point) Use the diagram to answer the
question.  How far did the ball move in the
final 2 seconds?
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88.
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(1 point) Use the diagram to answer the
question.  Which example shows a divergent
boundary
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89.
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(1 point) Use the diagram to answer the
question.  Which example shows a convergent
boundary?
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90.
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(1 point) Use the diagram to answer the
question.  Which plate boundary is most likely to
cause a rift valley to form?
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91.
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(1 point) Use the diagram to answer the
question.  Which letter represents the
position at which the basketball has the greatest potential energy?
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92.
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(1 point) Use the diagram to answer the
question.  Which letter represents the
position at which the basketball has the greatest kinetic energy?
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93.
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(1 point) Use the diagram to answer the
question.  Which letter represents the
position at which the basketball has the least potential energy?
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94.
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(1 point) Find the velocity of a dolphin that swims
55 m in 5.0 s.
a. | 11 s/m | c. | 275 m/s | b. | 11 m/s | d. | 11 m*s |
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95.
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(1 point) Which has greater momentum, a small
pick-up truck traveling at 55 km/h or a full-sized bus traveling at the same speed?
a. | the pick up | c. | the both have the same momentum | b. | the
bus | d. | there is not enough
information given |
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96.
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(1 point) A force of 6.2 ´ 105 N is needed to blast off a 5.0 ´ 103 kg rocket from rest. What is the rocket’s average
acceleration?
a. | 124 m/s | c. | 3.1 x 109 m/s2 | b. | 3.1 x 109
m/s | d. | 124
m/s2 |
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97.
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(1 point) _____ compares the actual amount of water
vapor in the air with the maximum amount possible at that temperature.
a. | Humidity | c. | Relative humidity | b. | Dew point | d. | None of the
above |
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98.
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(1 point) How high must you lift a 25-newton book
for it to have the same increase in potential energy as a 20-newton book that was lifted 0.5
m?
a. | 4 m | c. | 10 m | b. | .4 m | d. | 12.5 m |
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99.
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(1 point) A skydiver with a mass of 70 kg
accelerates to Earth at a rate of 9.8 m/s2 due to gravity. What is the force on the
skydiver?
a. | 7.14 N | c. | 686 N | b. | 0.14 N | d. | there is not enough information
given |
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100.
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(1 point) You push a food tray 1.5 m along a
cafeteria table with a constant force of 18 N. How much work do you do?
a. | 12 J | c. | 27 J | b. | 0.083 J | d. | there is not enough information
given |
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