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