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