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