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 sun B) Heat from within the Earth's crust C) The moon D) Running water
A) The state of the atmosphere at any particular time B) The amount of moisture in the air C) The number of clouds in the sky 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) The Earth's changing distance from the sun B) The tilt of the Earth on it's axis C) The Earth's rotation D) Changes in the sun's intensity
A) Because it reflects sunlight B) It reflects light from stars C) It makes it's own light D) It reflects light from Earth
A) High plateaus B) Mountains C) Sunken plains, or seas D) Deep craters
A) Motion B) Light C) Electricity D) Heat
A) Temperature and pressure B) Wind and rain C) Motion and time D) Lift and thrust |