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