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Energy Types and Conservation
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Energy Types and Conservation
📚 Part 1: Energy Types and Conservation
1. Which of the following best describes energy?
The ability to do work or cause change
A type of matter
A force that pushes objects
The speed of an object
2. Energy is measured in which unit?
Metres
Joules
Newtons
Kilograms
3. Which of the following are types of potential energy? (Select all that apply)
Gravitational potential energy
Chemical energy
Kinetic energy
Elastic potential energy
4. The Law of Conservation of Energy states that energy:
Can be created but not destroyed
Can be destroyed but not created
Cannot be created or destroyed, only transformed
Increases over time
🏀 Part 2: Basketball Bounce Experiment
5. Complete the data table below with your experimental results:
| Drop Height (m) | Trial 1 Bounce (m) | Trial 2 Bounce (m) | Trial 3 Bounce (m) | Average Bounce (m) |
|---|---|---|---|---|
| 0.5 | ||||
| 1.0 | ||||
| 1.5 |
6. Explain what type of energy the basketball has when held at the drop height:
7. What happens to the energy as the ball falls towards the ground?
8. Why doesn't the basketball bounce back to its original height? Where does the "lost" energy go?
🔬 Part 3: Energy Analysis
9. Fill in the blanks using the words: kinetic, potential, heat, sound
When the basketball is dropped, its gravitational __________ energy is converted to __________ energy. When it hits the ground, some energy is lost as __________ and __________ energy.
10. Calculate the gravitational potential energy (PE = mgh) for a 0.6 kg basketball dropped from 1.5 metres. Use g = 10 m/s².
11. Give one real-world example where you can observe energy transformation in your daily life:
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