Weather Terms The Water Cycle Weather Instruments Earth-SunEarth- Moon

A large body of air that has similar temperature and moisture level Air Mass

Water that falls to Earth Precipitation

The process by which a liquid changes into a gas. Evaporation

The process by which a gas changes into a liquid Condensation

The movement of water from the surface of Earth into the air and back. Water Cycle

Water that flows through underground rock Groundwater

Precipitation that is liquid water Rain

The boundary where a cold air mass moves under a warm air mass. Cold Front

A dangerous front that can bring many inches of precipitation over a long period Stationary Front

A large tropical storm that has winds of at least 74 miles per hour. Hurricane

Measures temperatures in Celsius and Fahrenheit Thermometer

Instrument that measures wind speed Anemometer

Instrument that measures amount of rain fall. Rain Gauge

Instrument that measures air pressure. Barometer

Instrument the measures humidity level Hygrometer

The imaginary line that Earth spins around as it rotates Axis

How long does it take for the Earth to revolve around the sun? 365 ¼ days

How long does it take the Earth to rotate on it’s axis? 24 hours or one day

If the southern hemisphere is having the season of winter, what season is the northern hemisphere having? Summer

This causes the Earth to have seasons. Earth’s Tilt

This is a small planetlike body that orbits the Earth. The Moon

This is the light source of the moon. Sunlight reflecting off of the moon’s surface

What is the correct sequence of moon phases starting with new moon? New Moon, first quarter, Full Moon, third quarter

About how long does it take the moon to revolve around earth? About 29 days or one month

What causes the different moon phases? The moon’s orbit around earth causes different amounts of sunlight to reflect off of the moon creating different shapes.