Fill in the blanks about energy conservation using the choices (lives, electrical, kinetic, thermal,

What this word bank question is testing

Each sentence describes the Law of Conservation of Energy or a common energy conversion. The right word is the one that matches the energy form being described (motion, stored position, temperature, electricity) or the First Law statement.

Filling the blanks sentence by sentence

1. Energy cannot be created or destroyed.

2. A pendulum converts between kinetic energy (motion) and potential energy (height).

3. Solar panels convert sunlight into electrical energy.

4. Fuel combustion in an engine first produces thermal energy (hot gases), which is then converted into mechanical energy.

5. Thermal processes involve transfer of heat energy between objects/systems.

6. A refrigerator cools by removing heat energy from its contents and dumping it to the room.

7. Regenerative braking recovers kinetic energy during deceleration (turning motion into stored electrical energy in the battery).

8. Ecosystems have energy inputs such as sunlight.

9. For an isolated system, total energy remains constant over time.

10. Energy conservation matters for efficiency and environmental impact in daily lives.

Quick check against the First Law idea

The First Law of Thermodynamics says energy is conserved, so you should see words like “created” (negated in the sentence) and “constant” to reinforce that total energy does not change in an isolated system.