Let's solve the
Energy Transfers worksheet step by step. The goal is to identify the
type of energy input and
output for each device, based on how energy is transferred.
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🔧 Understanding Energy Transfer
Energy can be transformed from one form to another. Common forms include:
-
Chemical (stored in fuels or batteries)
-
Electrical (flow of electric charge)
-
Kinetic (motion)
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Light (visible radiation)
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Thermal (heat)
-
Sound (vibrations in air)
-
Solar (from sunlight)
We'll use these to fill in the blanks.
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✔ Example: Battery-powered torch
-
Energy in: Chemical potential (from battery)
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Device: Battery-powered torch
-
Energy out: Light energy
✔ This is correct as shown.
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1️⃣ Kettle
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Device: Kettle
-
Energy in: Electrical energy
*(The kettle is plugged into an electrical socket; electricity powers the heating element.)*
-
Energy out: Thermal (heat) energy
*(The water heats up — this is thermal energy. Some sound may also be produced when it boils, but the main output is heat.)*
🔹
Answer:
- Energy in:
Electrical energy
- Energy out:
Thermal energy
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2️⃣ Microphone
-
Device: Microphone
-
Energy in: Sound energy
*(A microphone converts sound waves into electrical signals.)*
-
Energy out: Electrical energy
*(It outputs an electrical signal that represents the sound.)*
🔹
Answer:
- Energy in:
Sound energy
- Energy out:
Electrical energy
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3️⃣ Gas Oven
-
Device: Gas oven
-
Energy in: Chemical energy
*(Natural gas or propane is burned — this is chemical energy stored in the fuel.)*
-
Energy out: Thermal energy
*(The combustion produces heat to cook food.)*
🔹
Answer:
- Energy in:
Chemical energy
- Energy out:
Thermal energy
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✔ Final Answers:
| Device | Energy In | Energy Out |
|----------------|---------------------|---------------------|
|
Kettle | Electrical energy | Thermal energy |
|
Microphone | Sound energy | Electrical energy |
|
Gas Oven | Chemical energy | Thermal energy |
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📝 Summary Explanation:
-
Kettle: Electricity → Heat (to boil water).
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Microphone: Sound → Electrical signal (for recording or amplification).
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Gas Oven: Chemical energy (gas) → Heat (cooking).
These are all examples of
energy transfer in everyday devices.
Let me know if you'd like a printable version or visual diagram!
Parent Tip: Review the logic above to help your child master the concept of energy transformation worksheet.
