Understanding Energy Conservation

What is the law of conservation of energy?

• Energy can be created from nothing.

• Energy is always lost in transformations.

• Energy can be destroyed but not created.

• Energy cannot be created or destroyed, only transformed.

Can energy be created or destroyed?

• Energy can be both created and destroyed.

• Energy can be created but not destroyed.

• No, energy cannot be created or destroyed.

• Energy can be destroyed but not created.

What happens to energy in a closed system?

• Energy is created and destroyed in a closed system.

• Energy is lost in a closed system.

• Energy cannot change forms in a closed system.

• Energy is conserved and can change forms.

Give an example of energy transformation.

• Nuclear energy to sound energy in a reactor.

• Kinetic energy to potential energy in a roller coaster.

• Chemical energy to thermal energy in a fire.

• Electrical energy to light energy in a light bulb.

What is potential energy?

• Potential energy is the energy stored in an object due to its position or state.

• Potential energy is the energy released during a chemical reaction.

• Kinetic energy is the energy of motion.

• Potential energy is the energy associated with thermal motion.

What is kinetic energy?

• Kinetic energy is the energy released during a chemical reaction.

• Kinetic energy is the energy of an object due to its temperature.

• Kinetic energy is the energy stored in an object at rest.

• Kinetic energy is the energy of an object in motion.

How does energy conservation apply to roller coasters?

• Energy conservation does not apply to roller coasters at all.

• Roller coasters only use kinetic energy throughout the ride.

• Energy conservation applies to roller coasters by converting potential energy to kinetic energy as the coaster moves.

• Roller coasters generate energy from friction to maintain speed.

Why is it important to conserve energy?

• It is important to conserve energy to protect the environment, save money, and ensure sustainable resource use.

• To promote wastefulness

• To increase energy consumption

• To reduce the use of renewable resources

What are some ways to save energy at home?

• Leave windows open for ventilation

• Use energy-efficient appliances, seal drafts, switch to LED lighting, adjust thermostat settings, and unplug unused devices.

• Use incandescent bulbs for lighting

• Keep the thermostat at a constant high temperature

How does energy conservation help the environment?

• Energy conservation leads to more waste production.

• Energy conservation increases energy costs.

• Energy conservation helps the environment by reducing pollution and greenhouse gas emissions.

• Energy conservation has no impact on climate change.