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