A) in empty space
B) in the core of the Earth
C) in the air
D) inside a science lab

A) thunderstorm
B) tornado
C) hurricane
D) desert

A) wet and cold
B) hot and dry
C) rainy and humid
D) dark and wet

A) temperature
B) humidity
C) air pressure
D) lightning

A) lightning
B) air
C) sunlight
D) clouds

A) nimbus clouds
B) gravity
C) a cooler temperature
D) rain

A) rain
B) hail
C) clouds
D) snow

A) magnetic power
B) sound
C) gravity
D) solar energy

A) a loud noise in the atmosphere
B) energy from the sun
C) strong wind
D) an electrical charge released into the atmosphere

A) ocean
B) clouds
C) desert
D) forest

A) tornado
B) thunderstorm
C) hurricane
D) blizzard

A) balance scale
B) graduated cylinder
C) rain gauge
D) barometer

A) the amount of water vapor in the air
B) the type of clouds in the atmosphere
C) the weight of the air pressing on everything in the environment
D) the amount of precipitation in a certain area

A) the place where it is raining
B) the place where one air mass meets another
C) the type of weather in a place
D) a large bubble of air

A) a type of weather map
B) the place where air changes mass
C) the force of wind
D) a large pocket of air

A) the amount of air pressure on a certain day
B) a description of an ecosystem
C) condensation in the atmosphere
D) the usual weather in a place