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