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