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) The sun 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) Atmosphere B) Temperature C) Rotation D) Magnetic Field
A) The sun damages life on Earth B) The sun powers life on Earth C) The sun causes plants to wither and die D) The sun protects life on Earth
A) The tilt of the Earth on it's axis B) Changes in the sun's intensity C) The Earth's changing distance from the sun 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) Deep craters C) High plateaus D) Sunken plains, or seas
A) Light B) Motion C) Electricity D) Heat
A) Motion and time B) Wind and rain C) Temperature and pressure D) Lift and thrust |