To solve the problem, we need to determine whether each scenario involves
kinetic energy (energy in motion) or
potential energy (stored energy). Let's analyze each question step by step:
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1) When a dog is sleeping, it is ________ energy.
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Analysis: A sleeping dog is not moving, so it is not exhibiting kinetic energy. However, it has the potential to move if it wakes up.
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Answer: Potential energy
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2) When a dog is running, it is ________ energy.
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Analysis: A running dog is in motion, which means it has kinetic energy.
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Answer: Kinetic energy
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3) If the light is on, it is ________ energy.
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Analysis: When a light is on, it is actively producing light and heat, indicating that energy is being used (kinetic energy).
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Answer: Kinetic energy
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4) If the light is off, it is ________ energy.
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Analysis: When a light is off, it is not producing any light or heat. The energy is stored but not being used, so it is potential energy.
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Answer: Potential energy
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5) When the orange is in the tree, it is ________ energy.
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Analysis: An orange in a tree is stationary but has the potential to fall due to gravity. This stored energy is potential energy.
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Answer: Potential energy
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6) When the orange is falling from the tree, it is ________ energy.
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Analysis: An orange falling from a tree is in motion, converting its potential energy into kinetic energy.
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Answer: Kinetic energy
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7) When the flash light is ________, it is potential energy.
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Analysis: For a flashlight to have potential energy, it must be in a state where it is not currently using energy (e.g., turned off).
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Answer: Turned off
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8) When the flash light is ________, it is kinetic energy.
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Analysis: For a flashlight to have kinetic energy, it must be actively using energy (e.g., turned on and emitting light).
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Answer: Turned on
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9) When the blender is ________, it is potential energy.
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Analysis: A blender has potential energy when it is not in use (e.g., turned off) but has the ability to blend ingredients when activated.
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Answer: Turned off
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10) When the blender is ________, it is kinetic energy.
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Analysis: A blender has kinetic energy when it is in use (e.g., turned on and blending ingredients).
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Answer: Turned on
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Final Answers:
1. Potential energy
2. Kinetic energy
3. Kinetic energy
4. Potential energy
5. Potential energy
6. Kinetic energy
7. Turned off
8. Turned on
9. Turned off
10. Turned on
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Boxed Final Answer:
\[
\boxed{
\begin{array}{l}
1. \text{Potential energy} \\
2. \text{Kinetic energy} \\
3. \text{Kinetic energy} \\
4. \text{Potential energy} \\
5. \text{Potential energy} \\
6. \text{Kinetic energy} \\
7. \text{Turned off} \\
8. \text{Turned on} \\
9. \text{Turned off} \\
10. \text{Turned on}
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of kinetic and potential energy worksheet for middle school.
