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