Text Options for the Visually Impaired Font Size: a- A+ Color: A A A Revert 
Close vision bar
Open vision bar
Third Grade Science

Changes in Weather Study Guide

Third Grade

Atmosphere – a blanket of gases and tiny bits of dust that surround Earth.

Weather – what the air is like at a certain time and place.

Temperature – a measurement of how hot or how cold something is.

Thermometer – a tool that measures temperature.

Precipitation – water that falls to the ground from the atmosphere.

Rain – precipitation that falls as liquid.

Snow – precipitation that falls as ice crystals.

Sleet – rain that freezes as it falls.

Hail – lumps of ice that falls during a thunderstorm.

Wind – moving air.

Air pressure – the weight of air pressing down on Earth.

Cloud – a collection of tiny water drops or ice crystals in the air.

Cirrus clouds – thin, wispy white clouds that form high above the ground; usually seen during good weather.

Stratus clouds – low, flat layers of clouds that cover most of the sky; can bring rain or snow.

Cumulus clouds – white, puffy clouds.

Cumulonimbus clouds – dark clouds that bring lightning and thunder.

Fog – a stratus cloud that forms near the ground.

Evaporation – the changing of a liquid to a gas.

Water vapor – water in gas form; cannot be seen but is in the air all around you.

Condensation – the changing of a gas to a liquid.

Water cycle – describes how water moves between Earth’s surface and the atmosphere; controlled by the SUN.

Be able to draw the water cycle: evaporation -> condensation -> precipitation -> collection.

Thunderstorm – a storm with thunder, lightning, heavy rains, and strong winds.

Tornado – a powerful storm with rotating winds that forms over land.

Hurricane – a large storm with strong winds and heavy rains that forms over the ocean.

Blizzard – a storm with lots of snow, cold temperatures, and strong winds.

Safety during a thunderstorm – stay away from trees; do not use phones, computers, or other electrical devices; stay inside a strong building.

Safety during a tornado – stay away from doors and windows; lie in a low place and cover your head.

Climate – the pattern of weather at a certain place over a long time.

Axis – a line through the center of a spinning object.

Seasons – times of the year with different weather patterns.

**Students should have numerous diagrams, foldables, and notes in their science notebooks that will provide all of the resources necessary to prepare for this test.