|
|
|
1.
|
The type of energy stored by fossil fuels such as coal
is
A. | electromagnetic energy. | B. | mechanical energy. | C. | chemical potential
energy. | D. | kinetic energy. |
|
|
|
2.
|
What effect does a buoyant force have on a submerged
object?
A. | It causes the object to sink in a
fluid. | B. | It causes a net force acting downward on the
object. | C. | It causes the object to float in a
fluid. | D. | It causes a net force acting upward on the
object. |
|
|
|
3.
|
The tendency of an object to resist any change in its motion
is known as
A. | force. | B. | inertia. | C. | mass. | D. | balance. |
|
|
|
4.
|
Which of the following is NOT considered a renewable energy
source?
A. | Fossil Fuels | B. | Biomass | C. | Hydroelectric | D. | Solar |
|
|
|
The diagram shows how some properties of a wave change
as the wave travels.
|
|
|
5.
|
Refer to the diagram above. Between which two points is the
wave frequency the highest?
A. | point 1 and point 2 | B. | point 2 and point 3 | C. | point 3 and point
4 | D. | The frequency is the same between all points
shown. |
|
|
|
6.
|
Refer to the diagram above. Between which two points is the
wavelength the longest?
A. | point 3 and point 4 | B. | point 2 and point 3 | C. | The wavelength is the same
between all points shown. | D. | point 1 and point
2 |
|
|
|
7.
|
Refer to the diagram above. How does the wave amplitude
change from point 1 to point 4?
A. | The wave amplitude increases, then
decreases. | B. | The wave amplitude does not
change between these points. | C. | The wave amplitude
decreases. | D. | The wave amplitude
increases. |
|
|
|
8.
|
Refer to the diagram above. How does the wavelength change
from point 1 to point 3?
A. | The wavelength decreases, then
increases. | B. | The wavelength
increases. | C. | The wavelength
decreases. | D. | The wavelength does not
change between these points. |
|
|
|
9.
|
Refer to the diagram above. How does the wave frequency
change from point 1 to point 4?
A. | The wave frequency decreases, then
increases. | B. | The wave frequency
increases, then decreases. | C. | The wave frequency does not
change between these points. | D. | The wave frequency
increases. |
|
|
|
10.
|
The distance between two corresponding parts of a wave is
the wave’s
A. | frequency. | B. | speed. | C. | amplitude. | D. | wavelength. |
|
|
|
11.
|
What scientific rule explains hydraulic
systems?
A. | Bernoulli’s principle | B. | Archimedes’ principle | C. | Pascal’s
principle | D. | Newton’s first law of
motion |
|
|
|
12.
|
Air resistance is a type of
A. | velocity. | B. | friction. | C. | motion. | D. | acceleration. |
|
|
|
13.
|
A ship stays afloat as long as the buoyant force
is
A. | less than the ship’s speed. | B. | less than the ship’s weight. | C. | greater than the ship’s weight. | D. | greater than the ship’s speed. |
|
|
|
14.
|
When a wave hits a surface through which it CANNOT pass and
bounces back, it undergoes
A. | reflection. | B. | constructive
interference. | C. | destructive
interference. | D. | refraction. |
|
|
|
15.
|
If you exert a force of 20 newtons to push a desk 10 meters,
how much work do you do on the desk?
A. | 30 joules | B. | 100
joules | C. | 10 joules | D. | 200
joules |
|
|
|
16.
|
The ideal mechanical advantage for an inclined plane is
equal to the length of the incline divided by the
A. | slope of the incline. | B. | height of the incline. | C. | angle of the
incline. | D. | mass of the incline. |
|
|
|
17.
|
The force of gravity on a person or object at the surface of
a planet is known as
A. | mass. | B. | inertia. | C. | air
resistance. | D. | weight. |
|
|
|
18.
|
Photovoltaic cells are essential for harnessing this source
of energy and converting it to electricity.
A. | Solar | C. | Biomass | B. | Geothermal | D. | Hydrogen |
|
|
|
19.
|
The material through which a wave travels is called
a
A. | trough. | B. | medium. | C. | vibration. | D. | crest. |
|
|
|
20.
|
Water pressure increases as
A. | depth increases. | B. | acceleration increases. | C. | gravity
decreases. | D. | force
decreases. |
|
|
|
21.
|
What do machines do?
A. | change the amount of force you exert or the distance over which
you exert the force | B. | decrease the amount of work
that is done | C. | eliminate
friction | D. | increase the amount of work that is
done |
|
|
|
22.
|
Moving water can be used to produce electricity
because
A. | energy cannot be converted into other forms of
energy. | B. | kinetic energy can be converted into potential energy, but not
vice versa. | C. | potential energy can be
converted into kinetic energy, but not vice versa. | D. | most forms of energy can be converted into other
forms. |
|
|
|
23.
|
Air pressure decreases as
A. | velocity increases. | B. | acceleration decreases. | C. | gravity
increases. | D. | elevation
increases. |
|
|
|
24.
|
Pulling down on a rope to hoist a sail on a sailboat is an
example of a machine
A. | reducing friction. | B. | changing the direction in which a force is exerted. | C. | multiplying the distance over which a force is exerted. | D. | multiplying the force you exert. |
|
|
|
25.
|
A unit of pressure is called a
A. | pound. | B. | meter. | C. | bernoulli. | D. | pascal. |
|
|
|
26.
|
The product of an object’s mass and velocity is called
its
A. | acceleration. | B. | inertia. | C. | momentum. | D. | force. |
|
|
|
27.
|
Which form of energy includes using crops that could be used
for food as well.
A. | Wind | B. | Biomass | C. | Solar | D. | Geothermal |
|
|
|
28.
|
The force that pulls falling objects toward Earth is
called
A. | free fall. | B. | acceleration. | C. | air
resistance. | D. | gravity. |
|
|
|
29.
|
One way to increase acceleration is by
A. | decreasing mass. | B. | increasing mass. | C. | decreasing
force. | D. | increasing both force and mass
proportionally. |
|
|
|
30.
|
Air pressure increases as
A. | depth increases. | B. | depth decreases. | C. | elevation
decreases. | D. | elevation
increases. |
|
|
|
31.
|
The bending of waves due to a change in speed is
called
A. | interference. | B. | refraction. | C. | diffraction. | D. | reflection. |
|
|
|
32.
|
One example of a compound machine is a
A. | shovel. | B. | pair of
scissors. | C. | door. | D. | bicycle. |
|
|
|
33.
|
Waves combine to produce a smaller or zero-amplitude wave in
a process called
A. | reflection. | B. | refraction. | C. | destructive
interference. | D. | constructive
interference. |
|
|
|
34.
|
A machine that uses two or more simple machines is called
a
A. | combination machine. | B. | mixed machine. | C. | compound
machine. | D. | mechanical machine. |
|
|
|
35.
|
Forces can be added together only if they are
A. | acting on the same object. | B. | balanced forces. | C. | unaffected by
gravity. | D. | substantial. |
|
|
|
36.
|
The maximum distance that the particles of a medium move
from the rest position is the
A. | frequency of the wave. | B. | speed of the wave. | C. | amplitude of the
wave. | D. | wavelength of the wave. |
|
|
|
37.
|
An example of a fossil fuel is
A. | wood. | B. | petroleum. | C. | water. | D. | the
sun. |
|
|
|
38.
|
Work equals force times
A. | velocity. | B. | distance. | C. | energy. | D. | mass. |
|
|
|
39.
|
Fluid pressure is the total force exerted by the fluid
divided by
A. | the acceleration of the force. | B. | the gravitational pull within the fluid. | C. | the area over which the force is exerted. | D. | water pressure or depth. |
|
|
|
40.
|
Waves combine to make a wave with larger amplitude in a
process called
A. | refraction. | B. | destructive
interference. | C. | reflection. | D. | constructive
interference. |
|
|
|
41.
|
Which of the following refers to the distance from the crest
of a wave to the next crest?
A. | wave speed | C. | wave
amplitude | B. | wave frequency | D. | wavelength |
|
|
|
42.
|
Pressure can be measured in units of
A. | newtons per cubic centimeter. | B. | newtons. | C. | newtons per
centimeter. | D. | newtons per square
centimeter. |
|
|
|
43.
|
The greater the mass of an object,
A. | the easier the object starts moving. | B. | the greater its inertia. | C. | the more space it takes
up. | D. | the more balanced it is. |
|
|
|
44.
|
The highest parts of a transverse wave are
called
A. | crests. | B. | wavelengths. | C. | troughs. | D. | nodes. |
|
|
|
45.
|
Waves are classified according to
A. | their size. | B. | their
shape. | C. | their source. | D. | how they move. |
|
|
|
46.
|
What happens when two forces act in the same
direction?
A. | Their sum divided by two is the total
force. | B. | The stronger one prevails. | C. | They cancel each other out. | D. | They add
together. |
|
|
|
47.
|
This new and emerging energy source can harness the power
found in the bonds of a water molecule.
A. | Geothermal | B. | Nuclear | C. | Solar | D. | Hydrogen
|
|
|
|
48.
|
When two equal forces act on the same object in opposite
directions, the net force is
A. | smaller than either force. | B. | equal to each of the forces. | C. | zero. | D. | greater than either
force. |
|
|
|
49.
|
Work is measured in
A. | newtons. | B. | joules. | C. | pounds. | D. | meters. |
|
|
|
50.
|
Force equals mass times
A. | speed. | B. | inertia. | C. | acceleration. | D. | motion. |
|
|
|
51.
|
If an object floats, the volume of displaced water is equal
to the volume of
A. | the entire object. | B. | the portion of the object that is above water. | C. | exactly half of the object. | D. | the portion of the object
that is submerged. |
|
|
|
52.
|
The efficiency of a machine compares
A. | friction to mass. | B. | force to friction. | C. | force to
mass. | D. | output work to input work. |
|
|
|
53.
|
For work to be done on an object,
A. | the object must move some distance as a result of a
force. | B. | some force need only be exerted on the
object. | C. | the object must not move. | D. | the object must move, whether or not a force is exerted on
it. |
|
|
|
54.
|
According to Newton’s third law of motion, when a
hammer strikes and exerts force on a nail, the nail
A. | moves at a constant speed. | B. | creates a friction with the hammer. | C. | disappears into the wood. | D. | exerts an equal force back
on the hammer. |
|
|
|
55.
|
According to the law of conservation of momentum, when two
objects collide in the absence of friction,
A. | velocity increases. | B. | only the object with the larger mass continues on. | C. | momentum is not lost. | D. | velocity
decreases. |
|
|
|
56.
|
What type of conversion is taking place when natural gas is
used to heat water?
A. | mechanical energy into electromagnetic
energy | B. | thermal energy into mechanical energy | C. | chemical energy into thermal energy | D. | electromagnetic energy into chemical energy |
|
|
|
57.
|
The interaction between two waves that meet is
called
A. | refraction. | B. | diffraction. | C. | interference. | D. | reflection. |
|
|
|
58.
|
In order to do work on an object, the force you exert must
be
A. | in a direction opposite to Earth’s gravitational
force. | B. | in the same direction as the object’s
motion. | C. | quick and deliberate. | D. | the maximum amount of force you are able to
exert. |
|
|
|
59.
|
In physical science, a push or a pull is called
a(n)
A. | motion. | B. | acceleration. | C. | inertia. | D. | force. |
|
|
|
60.
|
The force that one surface exerts on another when the two
rub against each other is called
A. | acceleration. | B. | gravity. | C. | friction. | D. | inertia. |
|