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