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