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- 1. Multiple Choice
Use the data table and ball movement table to answer question #1.
Students investigate how the force of the wind affects the movement of equal-sized balls that have different masses.
As students observe, a wind blows equally on all of the balls. When the wind stops, students draw a picture of their results.
Which of the following can the students conclude from their data?
Balls move easily when their mass is higher.
Balls do not move because they have mass.
Balls move farther when their mass is lower.
Balls move quickly when their size is larger.
- 2. Multiple Choice
(1.P.1.1)
Use the picture below to answer question #2.
This soccer ball is moving to the right as shown by the arrow. Where should you place a pushing force to make the ball move in the opposite direction?
point W
point X
point Y
point Z
- 3. Multiple Choice
(7.P.2.1)
Which of the following is an example of potential energy?
A glass jar sitting of a shelf.
A flag waving in the wind.
A ball rolling along a sidewalk.
A battery powering a radio.
- 4. Multiple Choice
(7.P.2.1)
Use the diagram below to answer question #4.
In the classroom demonstration shown below, a rubber ball is dropped from Position 1. The ball bounces as shown. At which of these positions does the ball have both the greatest kinetic energy and the least potential energy?
Position 1
Position 2
Position 3
Position 4
- 5. Multiple Choice
(7.P.2.1)
Which of the following has the most kinetic energy?
a basketball rolling down a hill
a bus stopped at the top of a hill
a truck parked on the top of a hill
a golf ball at rest on the top of a hill
- 6. Multiple Choice
(7.P.2.1)
Use the diagram below to answer question #6. The diagram above shows four different devices. Which of the following types of energy is directly associated with each device?
mechanical energy
electromagnetic energy
thermal energy
electrical energy
- 7. Multiple Choice
Mechanical energy is a combination of which of the following?
kinetic energy and potential energy
potential energy and thermal energy
kinetic energy and potential energy
potential energy, kinetic energy and thermal energy
- 8. Multiple Choice
(7.P.2.1)
Ayana pulls back on a bow, getting ready to shoot an arrow. What forms the mechanical energy in the drawn bow?
the elastic kinetic energy in the bow string
the elastic electric energy in the bow string
the elastic thermal energy in the bow string
the elastic potential energy in the bow string
- 9. Multiple Choice
(7.P.2.1)
Which best describes a ball rolling down a ramp in relation to energy and change of energy?
The ball begins with stored potential energy which changes to kinetic as the ball begins rolling.
The ball begins with stored kinetic energy which changes to potential as the ball begins rolling.
The ball begins with stored chemical energy and changes to gravitational as it begins rolling.
The ball begins with stored gravitational energy and changes to chemical as it begins rolling.
- 10. Multiple Choice
(7.P.2.1)
Which term is best described as the sum of potential and kinetic energy?
nuclear energy
thermal energy
chemical energy
mechanical energy
- 11. Multiple Choice
(7.P.2.1)
A large demolition machine is used to knock down a building. Which wrecking ball’s potential energy contributes to the mechanical energy that is needed to knock down a building?
#1 demolition machine’s wrecking ball
#2 demolition machine’s wrecking ball
#3 demolition machine’s wrecking ball
#4 demolition machine’s wrecking ball
- 12. Multiple Choice
(7.P.2.1)
When a light is turned on, which change takes place?
Electrical energy moves from potential to kinetic.
Electrical energy moves from kinetic to potential.
Magnetic energy moves from potential to kinetic.
Magnetic energy moves from kinetic to potential.
- 13. Multiple Choice
(7.P.2.1)
Which object has kinetic energy?
a rock resting on a cliff
a car parked in a driveway
a barrel drifting down a waterfall
a house positioned on a mountainside
- 14. Multiple Choice
(7.P.2.1)
The diagram below shows the motion of a ball while being dropped. What happens to the energy of the ball from when t = 0 s to when t = 5 s?
Potential energy decreases and kinetic energy increases, but the total amount of mechanical energy remains the same.
Potential energy increases and kinetic energy decreases, but the total amount of mechanical energy remains the same.
Potential energy and kinetic energy both increase, and the total amount of mechanical energy increases.
Potential energy and kinetic energy both decrease, and the total amount of mechanical energy decreases.
- 15. Multiple Choice
(7.P.2.1)
How does the mechanical energy of a rock change as it falls from a mountain?
The mechanical energy remains the same because kinetic energy is changed into potential energy.
The mechanical energy remains the same because potential energy is changed into kinetic energy.
The mechanical energy increases because the kinetic energy is changed into speed, while the potential energy remains the same.
The mechanical energy increases because the potential energy is changed into acceleration, while the kinetic energy remains the same.
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