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