A) A gasoline burning automobile B) A coal burning generator C) An automobile that operates on fuel cells D) A wood burning stove
A) Running water B) The sun C) Heat from within the Earth's crust D) The moon
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) Rotation B) Atmosphere C) Temperature D) Magnetic Field
A) The sun protects life on Earth B) The sun causes plants to wither and die C) The sun damages life on Earth D) The sun powers life on Earth
A) Changes in the sun's intensity B) The Earth's changing distance from the sun C) The tilt of the Earth on it's axis D) The Earth's rotation
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) Mountains B) High plateaus C) Sunken plains, or seas D) Deep craters
A) Electricity B) Motion C) Light D) Heat
A) Motion and time B) Lift and thrust C) Temperature and pressure D) Wind and rain |