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Spring Semester Recap 2020

Total questions: 34

Worksheet time: 45mins

Name
Class
Date
1.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
2.
Expensive to use for large scale energy production and it is only practical for sunny areas.  This is a disadvantage of ______.
a)
Coal
b)
Solar
c)
Oil
d)
Wind
3.

Complete the sentence correctly : As _____ energy increases, _______ energy decreases on a roller coaster.

a)

electric, potential

b)

wind , kinetic

c)

kinetic, potential

d)

kinetic, thermal

4.
Where is the potential energy the greatest?
a)
A
b)
B
c)
C
d)
D
5.
One advantage of using hydropower is that...
a)
It can be built in any location
b)
it produces no air pollution
c)
It has no construction costs
d)
it uses a nonrenewable resource
6.

A giant condor can fly 15 miles in 30 minutes. What is his average speed in miles per hour?

a)

10 mph

b)

15 mph

c)

20 mph

d)

30 mph

7.

Which of these is NOT an unbalanced force ?

a)

A big ball rolling down hill

b)

A car gaining speed to pass another car

c)

A truck stopped at a red light

d)

Turn to enter the cafeteria from the hallway

8.

How does distance change the effort when using an inclined plane?

a)

as distance increases, effort decreases

b)

as distance decreases, effort decreases

c)

as distance increases, effort increases

d)

nothing, they both stay the same

9.

Which of these is true about unbalanced forces ?

a)

Can cause a change in direction

b)

Can cause a change in position

c)

Can cause a change in speed

d)

All are true.

10.

At what distance did the person turn around and walk back toward the starting point ?

a)

20 m

b)

30 m

c)

40 m

d)

50 m

11.

Match the description to the graph:

"The car is coming back."

a)
b)
c)
d)
12.

What is happening at D?

a)

Not moving

b)

Speeding up

c)

Fast steady speed; moving away from the starting position

d)

Slower steady speed; moving away from the starting position

13.

Which items would have this energy transformation: chemical energy -> electrical -> sound energy?

a)

tanning bed

b)

candle burning

c)

radio playing

d)

solar calcultor

14.
A ball is released from rest at position 1.  The diagram shows the ball in four positions as it rolls along a track from left to right. In which position does the ball have its minimum gravitational potential energy and maximum kinetic energy?
a)
1
b)
2
c)
3
d)
4
15.
A ball is released from rest at position 1.  The diagram shows the ball in four positions as it rolls along a track from left to right. In which position does the ball have its minimum gravitational potential energy and maximum kinetic energy?
a)
1
b)
2
c)
3
d)
4
16.

Which NONRENEWABLE resource creates greenhouse gases ?

a)

natural gas

b)

biomass

c)

nuclear

d)

wind

17.
Which statement is true about wind power?
a)
it is inexpensive and limitless
b)
It releases greenhouse gases leading to climate change
c)
It is nonrenewable
d)
It is harmful to habitats and ecosystems
18.
Which statement is true about coal and natural gas?
a)
Both are renewable resources
b)
Both require wind in order to work
c)
Both lead to greenhouse gases and climate change
d)
Neither one causes global warming
19.

The graph shows Ashley riding her bike to Maria's house, stopping for short time and then riding away from Maria's house to the store. How long was Maris stopped ?

a)

1 min

b)

2 min

c)

3 min

d)

4 min

20.
The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming -
a)
chemical energy to electrical to sound.
b)
electrical energy to thermal to light.
c)
sound energy to electrical to chemical.
d)
mechanical energy to electrical to sound.
21.
A student listens to music with a digital music player, similar to the one shown below. Which best describes the energy transformations that take place in the music player?
a)
Mechanical to chemical to electrical
b)
Chemical to sound to electrical
c)
Chemical to electrical to sound
d)
Electrical to heat to sound
22.

Which of these statements is referring to balanced forces?

a)

Jumping on a trampoline

b)

Hitting a volleyball over the net

c)

Running in a relay race

d)

Rolling a ball at a constant speed

23.

Which point has the most potential energy?

a)

G

b)

f

c)

b

d)

a

24.

2. The diagram represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?

a)

1

b)

2

c)

3

d)

4

25.

At which part of the waterfall will the potential and kinetic energy be equal 50 PE /50 KE ?

a)

At the top of the waterfall

b)

In the middle of the waterfall

c)

At the bottom of the waterall

d)

Downstream from the waterfall

26.

The diagram above shows a wind turbine. The wind turbine changes

a)

electrical energy to mechanical energy

b)

mechanical energy to mechanical energy

c)

mechanical energy to electrical energy

d)

chemical energy to electrical energy

27.
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
28.
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.
29.

A cyclist travels 30 meters in 3 hours. How fast was the cyclist traveling?

a)

90 m/h

b)

10 m/h

c)

30 m/h

30.

Which graph correctly represents the motion described?

a)
b)
c)
d)
31.

What is the speed of this object at 2 seconds?

a)

5 m/s

b)

45 m/s

c)

5 s/m

d)

45 s/m

32.

What is the speed of the object from 30 to 60 seconds ?

a)

0 m/s

b)

10 m/s

c)

20 m/s

d)

50 m/s

33.

Which of these describes an unbalanced force ?

a)

A motorcycle speeding up down the street

b)

A school bus slowing down to pick up kids

c)

A bicyclist turning a corner

d)

All of these are correct

34.
Which runner had a head start?
a)
A
b)
B
c)
C
d)
None of them

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