A) A gasoline burning automobile B) An automobile that operates on fuel cells C) A coal burning generator D) A wood burning stove
A) Running water B) The moon C) Heat from within the Earth's crust D) The sun
A) The state of the atmosphere at any particular time B) The number of clouds in the sky C) The speed of the wind D) The amount of moisture in the air
A) Magnetic Field B) Temperature C) Rotation D) Atmosphere
A) The sun protects life on Earth B) The sun causes plants to wither and die C) The sun powers life on Earth D) The sun damages life on Earth
A) Changes in the sun's intensity B) The tilt of the Earth on it's axis C) The Earth's changing distance from the sun D) The Earth's rotation
A) It reflects light from Earth B) Because it reflects sunlight C) It reflects light from stars D) It makes it's own light
A) Mountains B) High plateaus C) Sunken plains, or seas D) Deep craters
A) Light B) Electricity C) Motion D) Heat
A) Temperature and pressure B) Lift and thrust C) Wind and rain D) Motion and time |