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Study Guide Weather Science, Grade 3

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WEATHER What is the weather like outside? Weather is the condition of the air outside. Weather involves many things, such as clouds, temperature, water in the air, and the wind. There are several different types of clouds. Different clouds cause different kinds of weather. A meteorologist is a person that studies the weather. Meteorologists use many tools to help them predict the weather. One important thing they look at when doing so is the atmosphere, which is the air all around us. The Earth’s atmosphere has different layers that are made up of gases. Lesson Checkpoint: What is a meteorologist? © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Air Pressure Affects the Weather The Earth’s atmosphere also has weight, which presses down onto the Earth which creates air pressure. When the air in the atmosphere presses down a lot, it is known as HIGH air pressure. When the air in the atmosphere presses down just a little, that is known as LOW air pressure. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Air pressure affects the weather. LOW air pressure causes clouds to form and often rain. HIGH air pressure means it will most likely be sunny and the skies will be clear. Air pressure is measured with a barometer. Lesson Checkpoint: What type of weather does HIGH air pressure usually bring? Tools of the Trade Meteorologists also use tools to predict the weather, such as wind vanes to help measure the direction of the wind and they use instruments to measure wind speed. Meteorologists use a hygrometer to measure the amount of water vapor in the air which tells them how high the humidity will be. When the humidity is low, there is little water vapor in the air. When the humidity is high the air has a lot of water vapor in it. Meteorologists use a rain gauge to measure the amount of rainfall. Meteorologists use weather maps to show what the weather will be like in large areas of the world. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Weather maps will often show your local temperatures as well as air pressure movements to let you know if you have cloudy or clear skies coming your way. Lesson Checkpoint: What tool does a meteorologist use to measure the amount rainfall that has fallen? Out of This World Weather satellites in space gather information from all around the world. These satellites take pictures from high above and send the pictures back to computers so that scientists and meteorologists can predict the upcoming weather in all areas. The weather can also affect the pollution in many areas. A lot of pollution comes from the exhaust of cars which stays in the air causing the pollution to be high in particular areas. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Weather follows certain patterns. Depending on where you live, the pattern of your weather may differ from the weather of some place else on Earth. How much rain and snowfall you get (if any) often has to do with where you live. Areas near large bodies of water have different weather patterns than those areas that are very far away from the water. The average temperature will vary depending on where you live too If you live closer to the equator, in Mexico or northern Africa for example, you will have warmer temperatures for many more days than those who live up far from the equator. Weather can be extremely dangerous and powerful, causing great damage to places on Earth. A hurricane is a storm called that forms over oceans that bring winds reaching over 74 miles/119 kilometers per hour. Hurricanes can be predicted before they strike land so people have time to prepare for the damaging storm. A tornado is a funnel shaped column of air that touches the ground destroying anything in its path. It is smaller but has heavier winds than a hurricane. Tornadoes form over land under storm clouds without warning, giving people no time to prepare for the damage they can cause. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Lesson Checkpoint: What is one difference between a hurricane and a tornado? A blizzard is a winter storm that brings a lot of snowfall, blowing winds, and cold temperatures. The National Weather Services sends out watches and warnings on extreme weather to help keep you safe. A storm WATCH means a storm may happen in your area and WARNING means a storm is in or near the area in which you live. Lesson Checkpoint: What is the difference between a weather watch and a warning? © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Weather

Science, Grade 3

Weather

Study Guide

Weather

Flash Cards

Weather

Quiz

Weather

Worksheets

Weather

Games

Study Guide Weather Science, Grade 3

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