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