Energy transformations worksheet - Free Printable

Let's solve this step by step. The image shows a series of energy transformations, where input energy is converted into output energy through different devices or processes.

We need to identify the type of energy input and the type of energy output for each scenario.

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1. Fire (Flame)

- 🔥 Image: A fire burning.
- Input Energy: Chemical energy (from fuel like wood or gas)
- Output Energy: Heat energy and light energy
- ✔ Answer:
- Input: Chemical energy
- Output: Heat and light energy

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2. Light Bulb

- 💡 Image: A glowing light bulb.
- Input Energy: Electrical energy (from electricity)
- Output Energy: Light energy (and some heat)
- ✔ Answer:
- Input: Electrical energy
- Output: Light energy

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3. Bow and Arrow

- 🏹 Image: A bow being pulled back.
- Input Energy: Mechanical energy (specifically, potential energy stored in the stretched bow)
- Output Energy: Kinetic energy (arrow flying forward)
- ✔ Answer:
- Input: Mechanical energy (elastic potential energy)
- Output: Kinetic energy

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4. Electric Kettle

- ⚡ Image: An electric kettle.
- Input Energy: Electrical energy
- Output Energy: Thermal (heat) energy (to boil water)
- ✔ Answer:
- Input: Electrical energy
- Output: Thermal energy

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5. Drum with Drumsticks

- 🥁 Image: A drum being hit.
- Input Energy: Mechanical energy (kinetic energy from hands/drumsticks)
- Output Energy: Sound energy (vibrations create sound)
- ✔ Answer:
- Input: Mechanical energy
- Output: Sound energy

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6. Battery (Power Cell)

- 🔋 Image: A battery labeled "POWERCELL".
- Input Energy: Chemical energy (stored inside the battery)
- Output Energy: Electrical energy (when connected to a circuit)
- ✔ Answer:
- Input: Chemical energy
- Output: Electrical energy

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7. Crisps (Snack Can)

- 🍟 Image: A can of "Chalkers Crisps".
- This represents food — energy from eating.
- Input Energy: Chemical energy (in the food)
- Output Energy: When consumed, it provides energy for body functions → Thermal energy and kinetic energy (body movement, warmth)
- But in this context, since it's just a can of crisps, we assume the input is chemical energy (stored in food), and output is energy used by the body.
- ✔ Answer:
- Input: Chemical energy
- Output: Thermal and kinetic energy (or simply biological energy, but standard answer is thermal and kinetic)

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Final Answers:

| Image | Input Energy | Output Energy |
|------|--------------|----------------|
| 🔥 Fire | Chemical energy | Heat and light energy |
| 💡 Light Bulb | Electrical energy | Light energy |
| 🏹 Bow & Arrow | Mechanical energy (elastic potential) | Kinetic energy |
| ⚡ Electric Kettle | Electrical energy | Thermal energy |
| 🥁 Drum | Mechanical energy | Sound energy |
| 🔋 Battery | Chemical energy | Electrical energy |
| 🍟 Crisps | Chemical energy | Thermal and kinetic energy |

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Summary (Fill in the blanks):

1. Input: Chemical energy → Fire → Output: Heat and light energy
2. Input: Electrical energy → Light bulb → Output: Light energy
3. Input: Mechanical energy → Bow → Output: Kinetic energy
4. Input: Electrical energy → Kettle → Output: Thermal energy
5. Input: Mechanical energy → Drum → Output: Sound energy
6. Input: Chemical energy → Battery → Output: Electrical energy
7. Input: Chemical energy → Crisps → Output: Thermal and kinetic energy

✔ All answers are based on common energy transformation principles.