Let's solve the
Energy Transfer Worksheet step by step. The task is to identify the
input energy (the type of energy the device uses) and the
output energy (the type of energy it produces or transfers).
---
🔧 1. Light Bulb
-
Input Energy: Electrical energy
→ The light bulb is powered by electricity from a power source (like a wall outlet).
-
Output Energy: Light energy (and some heat energy)
→ The main purpose is to produce light, though incandescent bulbs also release heat.
✔ Answer:
INPUT: Electrical energy
OUTPUT: Light energy
---
🔥 2. Stove (Oven)
-
Input Energy: Chemical energy (from gas) or Electrical energy
→ Most stoves use either natural gas (chemical energy) or electricity. Since this image shows burners, it's likely
gas, so we'll go with
chemical energy.
-
Output Energy: Heat energy
→ The stove heats up food using thermal energy.
✔ Answer:
INPUT: Chemical energy
OUTPUT: Heat energy
> ⚠️ Note: If it were an electric stove, input would be electrical energy. But since it’s illustrated as a traditional stove with burners,
chemical energy is more appropriate.
---
🍵 3. Blender
-
Input Energy: Electrical energy
→ The blender runs on electricity to power its motor.
-
Output Energy: Kinetic energy (motion of blades)
→ The blades spin to blend food. There may also be some sound and heat, but the primary output is mechanical/kinetic energy.
✔ Answer:
INPUT: Electrical energy
OUTPUT: Kinetic energy
---
🚗 4. Car
-
Input Energy: Chemical energy (from fuel like gasoline)
→ Cars burn fuel in their engines, which stores chemical energy.
-
Output Energy: Kinetic energy (movement)
→ The car moves forward due to motion. Also produces heat and sound, but the main useful output is
kinetic energy.
✔ Answer:
INPUT: Chemical energy
OUTPUT: Kinetic energy
---
✔ Final Answers:
| Device | Input Energy | Output Energy |
|---------------|--------------------|------------------------|
| Light Bulb | Electrical energy | Light energy |
| Stove | Chemical energy | Heat energy |
| Blender | Electrical energy | Kinetic energy |
| Car | Chemical energy | Kinetic energy |
---
📝 Explanation Summary:
-
Energy transfer means converting one form of energy into another.
- Devices take
input energy and transform it into
useful output energy, often with some waste (like heat or sound).
- Always think: *What powers the device?* → That's the input.
- *What does it do?* → That's the output.
Let me know if you'd like a printable version or want to add labels!
Parent Tip: Review the logic above to help your child master the concept of energy transfer worksheet.
