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) The sun C) Running water D) The moon
A) The amount of moisture in the air B) The speed of the wind C) The state of the atmosphere at any particular time D) The number of clouds in the sky
A) Rotation B) Magnetic Field C) Atmosphere D) Temperature
A) The sun causes plants to wither and die B) The sun powers life on Earth C) The sun damages life on Earth D) The sun protects life on Earth
A) The Earth's changing distance from the sun B) Changes in the sun's intensity C) The tilt of the Earth on it's axis D) The Earth's rotation
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) Mountains B) Deep craters C) High plateaus D) Sunken plains, or seas
A) Motion B) Heat C) Light D) Electricity
A) Temperature and pressure B) Lift and thrust C) Motion and time D) Wind and rain |