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