Understanding Energy

What is the fundamental role of energy in our daily lives?

• It is used only for industrial purposes.

• It powers all activities and processes.

• It is only used in scientific experiments.

• It is only necessary for cooking.

Which of the following is an example of kinetic energy?

• A stretched bow and arrow.

• A flying bird.

• A battery storing charge.

• A book on a shelf.

How does electrical energy transform when you switch on a fan?

• It becomes sound energy.

• It becomes kinetic energy.

• It becomes chemical energy.

• It becomes potential energy.

What is the primary source of energy for most processes on Earth?

• Wind

• Nuclear power

• The Sun

• Fossil fuels

How do plants obtain energy?

• Through photosynthesis using sunlight.

• By absorbing water.

• By consuming other plants.

• By absorbing nutrients from the soil.

What happens to matter when energy changes its state?

• Matter is rearranged.

• Matter is created.

• Matter remains unchanged.

• Matter is destroyed.

Which process is an example of energy transformation?

• Boiling soup.

• Melting ice into water.

• Lighting a gas stove.

• Freezing juice.

What is a characteristic of non-renewable energy sources?

• They are infinite.

• They can be replenished quickly.

• They can run out.

• They are always clean.

Why is it important to use more renewable energy sources?

• To increase energy costs.

• To increase pollution.

• To deplete natural resources.

• To slow down climate change.

Which of the following is a renewable energy source?

• Coal

• Natural gas

• Wind

• Oil