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