A) conserve energy
B) eat
C) fly
D) do work

A) light
B) sound
C) inertia
D) heat

A) a fire
B) a factory
C) the sun
D) the moon

A) life on Earth
B) stars and planets
C) water and oxygen
D) rocks and dirt

A) an engine
B) wings
C) energy
D) wheels

A) solar energy
B) nuclear energy
C) sound energy
D) magnetic energy

A) leaves
B) water
C) food
D) soil

A) heat from an oven
B) energy in food
C) a magnet
D) the sun

A) a radio
B) a fire
C) the sun
D) a magnet

A) distant plantes
B) the poles of the Earth
C) dead plants and animals
D) power plants

A) energy stored in an object
B) the ability to do work
C) the energy of motion
D) energy fromthe sun

A) energy from the sun
B) the ability to do work
C) the energy of motion
D) energy stored in an object

A) the energy of motion
B) energy from the sun
C) energy stored in an object
D) the ability to do work

A) the energy of motion
B) energy fromt he sun
C) energy stored in an object
D) heat energy