WorksheetsRetest Preparation for CCA 2
Total questions: 40
Worksheet time: 37mins
Name
Class
Date
1.
Stored energy in water behind a dam falls and changes into mechanical energy that turns a turbine that turns coils in a generator that produces electrical energy. What is this?
a)
Fossil Fuel Power Plant
b)
Nonrenewable Power Plant
c)
Nuclear Power Plant
d)
Hydroelectric Power Plant
2.
Which of the following energy resources is nonrenewable?
a)
Biomass
b)
Geothermal
c)
Fossil Fuel
d)
Hydropower
3.
Oil, Natural Gas, Nuclear, Coal - What do these items have in common?
a)
They are examples of inexhaustible energy resources.
b)
They are examples of renewable energy resources.
c)
They are examples of energy resources that do not cause pollution.
d)
They are examples of nonrenewable energy resources.
4.
Why is the Sun considered the ultimate energy source?
a)
The Sun is the center of our solar system.
b)
The Sun provides energy for the water cycle and plants.
c)
The Sun is limited in the amount of energy released daily.
d)
The Sun rises and sets each day as seen from Earth.
5.
Which energy resource, once depleted, is essentially nonrenewable?
a)
Coal
b)
Solar
c)
Biomass
d)
Wind
6.
____ is the remains of plants and animals.
a)
Biomass
b)
Natural gas
c)
Geothermal
d)
Hydropower
7.
The type of energy that cattle create is ________?
a)
biomass
b)
solar
c)
natural gas
d)
nuclear
8.
The careful use of a resource is....
a)
recycling
b)
pollution
c)
depositing
d)
conservation
9.
Hydroelectric power produces electricity using.....
a)
Wind
b)
Sunlight
c)
Moving water
d)
Dung
10.
What percentage of our energy use comes from fossil fuels?
a)
25%
b)
45%
c)
61%
d)
86%
11.
Energy that uses heat that comes from within the Earth is called what?
a)
Geophysical
b)
Geography
c)
Geothermal
d)
Geographic
12.
A main disadvantage to solar energy is it
a)
Produces too much energy.
b)
Causes wind.
c)
Is expensive.
d)
Causes heat.
13.
Based on the data collected, which source of alternative energy is most efficient?
a)
Coal
b)
Wind
c)
Natural gas
d)
Solar
14.
Which of the following are renewable resources?
a)
coal, oil, biofuel
b)
trees, animals, water
c)
coal, oil, petroleum
d)
oxygen, soil, fossil fuels
15.
Which statement best explains how deforestation affects organisms?
a)
It increases the amount of carbon dioxide in the air, enhancing global warming
b)
It reduces the amount of carbon dioxide in the air, enhancing global warming
c)
It reduces the amount of carbon dioxide in the air, enhancing ozone layer destruction
d)
It increases the amount of carbon dioxide in the air, enhancing ozone layer destruction
16.
What is the equation to calculate speed?
a)
speed = distance/time
b)
speed = time/distance
c)
speed = time x distance
d)
speed = speed/time
17.
A train travels 25 km in .5 hrs. How fast is the train going?
a)
25 miles/hr
b)
5 miles/hr
c)
125 km/hr
d)
50 km/hr
18.
Mr. Rudman speed walked 2 miles in 10 minutes, what is his speed?
a)
0.2 miles/min
b)
2 miles/min
c)
20 miles/min
d)
40 miles/min
19.
10 miles per hour is an example of an objects what?
a)
Velocity
b)
Speed
c)
Acceleration
d)
Inertia
20.
On a distance vs. time graph, the steeper the slope _____
a)
the slower the speed
b)
the faster the speed
c)
less acceleration
d)
greater acceleration
21.
LT4: The graph shows Ashley riding her bike to Maria's house.
What was occurring from point B to point C?
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
22.
LT4: The graph shows Ashley riding her bike to Maria's house.
What is occurring from point A to point B?
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
23.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
24.
What is happening at A?
a)
Stationary
b)
Accelerating
c)
Slower steady speed; moving away from the starting position
d)
Steady speed; returning to start position
25.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
26.
Which runner had a head start?
a)
A
b)
B
c)
C
d)
None of them
27.
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
28.
A device that transmits or modifies force or motion
a)
Slope and Rise
b)
Load
c)
Simple Machine
d)
Mechanical Advantage
29.
The inclined plane makes work easier by _____ the amount of effort that must be applied to raise or lower a load.
a)
increasing
b)
accelerating
c)
reducing
d)
softening
30.
To reduce the amount of effort needed to raise or lower an object in an inclined plane, the length of the slope should be ______.
a)
Distance
b)
Extended
31.
A push or pull = Force
a)
True
b)
False
32.
How does using an inclined plane make lifting a load easier?
a)
it makes the mass levitate upward
b)
it increases the force needed to lift a mass
c)
it decreases the force needed to lift a mass
d)
it doesn't help
33.
Which of the following best describes the forces being applied in this situation?
a)
The forces are balanced, and the net force is zero.
b)
The forces are unbalanced, and the force of Horse 1 is greater.
c)
The forces are unbalanced, and the force of Horse 2 is greater.
d)
The forces are balanced, and the force of Horse 1 is greater.
34.
Students pulled the same mass up an inclined plane that was 20 cm, 30 cm, and 40 cm long. Each time, they used a spring scale to measure the force needed to pull the mass up the inclined plane. What did they conclude?
a)
Less force was needed on the 20 cm plane
b)
More force was needed on the 40 cm inclined plane.
c)
The least amount of force was needed on the 40 cm inclined plane.
d)
The least amount of force was needed on the 30 cm inclined plane.
35.
Which of the following decreases when an object is moved using an inclined plane?
a)
The distance the object moves.
b)
The pull of gravity on the object.
c)
The force needed to move the object.
d)
The amount of space the object occupies.
36.
Which graph shows the fastest speed?
a)
A
b)
B
c)
C
d)
D
37.
The longer the inclined plane, the ___________________ to move the object
a)
the less input force you need
b)
the more input force you need
c)
the more output force you need
d)
the less output force you need
38.
What is a disadvantage of using an inclined plane to lift a heavy object?
a)
The object must be moved a greater distance.
b)
It takes less effort to move the object.
c)
Many objects are difficult to lift straight up.
d)
Heavy object usually take up more space.
39.
Which has the longer distance - straight lift from the ground directly to the back of truck or using an inclined plane?
a)
Straight lift
b)
Inclined plane
c)
They are the same
40.
A ramp and a hill are examples of which simple machine?
a)
wedge
b)
screw
c)
inclined plane
100 %
