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

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

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

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

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

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

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

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

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

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

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

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

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

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