energi

What is energy?

• The ability to do work or perform tasks.

• A type of matter that can be created or destroyed.

• A force that causes objects to move.

• The amount of heat in an object.

What energy transformation occurs when using an electric iron?

• Chemical energy to heat energy.

• Electrical energy to heat energy.

• Electrical energy to light energy.

• Kinetic energy to electrical energy.

What is the primary energy transformation that occurs during photosynthesis?

• Chemical energy to light energy.

• Heat energy to kinetic energy.

• Light energy to chemical energy.

• Sound energy to electrical energy.

What are the main products of photosynthesis?

• Glucose and oxygen

• Carbon dioxide and water

• Sunlight and chemical energy

• Starch and carbon monoxide

Which characteristic describes alternative energy sources?

• They are non-renewable.

• They are limited in supply.

• They can replace conventional fuels and are unlimited.

• They primarily use fossil fuels.