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