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