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