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