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