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