Changes in Weather Study Guide
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.