Let's go through each question one by one and solve them with explanations.
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1. The diagram shows a cart moving freely along a track. What happens to the energy of the cart as it moves from point A to point B on the diagram?
-
Diagram Description: Point A is at the top of a hill (highest elevation), and point B is lower down, possibly at the bottom or a lower slope.
- As the cart moves
from A to B, it descends in height → its
gravitational potential energy decreases.
- Since it’s moving freely (assuming no friction), the lost potential energy is converted into
kinetic energy (motion).
- So,
potential energy → kinetic energy.
✔ Correct Answer: B. Potential energy is transformed to kinetic energy.
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2. A toy robot can walk and talk and runs on batteries. Which type of energy is stored in the batteries?
- Batteries store energy through chemical reactions between substances inside them.
- This stored energy is
chemical energy, which is then converted into electrical energy to power the robot.
✔ Correct Answer: A. Chemical
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3. Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?
- Gravitational potential energy depends on
height: higher = more potential energy.
- Among the diagrams:
-
A: Ball is low (just kicked)
-
B: Ball is at the peak of its arc (highest point)
-
C: Ball is descending
- At the
highest point (top of trajectory), the ball has maximum gravitational potential energy.
✔ Correct Answer: B
*(Note: The image shows three options labeled A, B, C — but only option B shows the ball at the highest point.)*
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4. What forms of energy are involved in hammering a nail into wood? Select all that apply.
- When you swing a hammer:
- You give it
kinetic energy (motion).
- On impact, the hammer transfers energy to the nail.
- Some energy becomes
sound (noise from hitting).
- Some energy becomes
heat (due to friction and deformation), though not listed.
-
Electrical and
nuclear energy are not involved here.
- So,
kinetic and
sound energy are directly involved.
✔ Correct Answers: A. Kinetic, C. Sound
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5. Which term describes the energy that is stored due to the height of an object above the ground?
- This is the definition of
gravitational potential energy.
- It increases with height and mass.
✔ Correct Answer: C. Gravitational potential energy
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✔ Final Answers:
1.
B
2.
A
3.
B
4.
A, C
5.
C
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Parent Tip: Review the logic above to help your child master the concept of energy transfer worksheet answers.
