What is the primary source of light energy on Earth?
fire
the earth
the sun
the moon
How is thermal energy, or heat, generated?
By the release of chemical energy
Through the absorption of sound waves
By the presence of light energy
By the movement of tiny particles within an object
What type of energy is released when a chemical reaction takes place?
Chemical energy
Mechanical energy
Light energy
Sound energy
How is sound energy created?
By the transformation of heat energy
By the reflection of light
By the vibration of objects and air particles
By the movement of electrons
What does chemical energy do in the context of food?
It produces heat in cold environments
It is stored and released when the body digests food
It absorbs light energy for growth
It creates vibrations that produce sound
What is electrical energy used for?
To store food
To power machines
To make objects heavier
To create sound
