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 sun B) Running water C) Heat from within the Earth's crust D) The moon
A) The state of the atmosphere at any particular time B) The speed of the wind C) The amount of moisture in the air D) The number of clouds in the sky
A) Rotation B) Magnetic Field C) Temperature D) Atmosphere
A) The sun causes plants to wither and die B) The sun protects life on Earth C) The sun damages life on Earth D) The sun powers life on Earth
A) Changes in the sun's intensity B) The tilt of the Earth on it's axis 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) Deep craters B) Sunken plains, or seas C) High plateaus D) Mountains
A) Motion B) Heat C) Electricity D) Light
A) Temperature and pressure B) Motion and time C) Lift and thrust D) Wind and rain |