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