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