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