Let's solve each question based on the definitions provided:
>
Potential energy is stored energy and is waiting to work.
>
Kinetic energy is energy that is working (in motion or being used).
---
1) When a dog is sleeping, it is potential energy.
✔ Explanation: The dog is at rest, not moving. Its energy is stored (e.g., in body cells), so it’s potential energy.
---
2) When a dog is running, it is kinetic energy.
✔ Explanation: The dog is in motion — movement means kinetic energy.
---
3) If the light is on, it is kinetic energy.
✔ Explanation: The light is actively producing light and heat — energy is being used, so it's kinetic energy.
---
4) If the light is off, it is potential energy.
✔ Explanation: The light bulb is not working, but it has stored energy (e.g., in batteries or electrical circuits ready to be used). So, it’s potential energy.
---
5) When the orange is in the tree, it is potential energy.
✔ Explanation: The orange is at a height above the ground, so it has gravitational potential energy due to its position.
---
6) When the orange is falling from the tree, it is kinetic energy.
✔ Explanation: As the orange falls, it’s in motion — so it has kinetic energy. (Note: It still has some potential energy, but the dominant form during fall is kinetic.)
---
7) When the flash light is off, it is potential energy.
✔ Explanation: The flashlight isn’t using energy; the batteries have stored chemical energy — potential energy.
---
8) When the flash light is on, it is kinetic energy.
✔ Explanation: The flashlight is emitting light — energy is being used, so it’s kinetic energy.
---
9) When the blender is off, it is potential energy.
✔ Explanation: The blender is not operating. The electricity is stored (or available) in the circuit/battery, so it’s potential energy.
---
10) When the blender is on, it is kinetic energy.
✔ Explanation: The blades are spinning — motion = kinetic energy.
---
✔ Final Answers:
1)
potential
2)
kinetic
3)
kinetic
4)
potential
5)
potential
6)
kinetic
7)
off
8)
on
9)
off
10)
on
---
This worksheet helps distinguish between stored (potential) and active (kinetic) energy in everyday situations.
Parent Tip: Review the logic above to help your child master the concept of kinetic and potential energy worksheet 4th grade.
