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