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