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

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

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

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

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

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

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

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

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

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

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

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

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

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