تدريب Shadowing: Weather for Kids | What is weather, and how does it work? - تعلم التحدث بالإنجليزية عبر الفيديو
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Weather for Kids Today, we are talking all about the weather.
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There is a good chance that when you woke up this morning, you probably checked the weather.
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That is because it is important to know
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when to wear a heavy coat and snow boots and when to put on a swimming suit.
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You would not wear a coat in the heat or a swimming suit in the cold.
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So learning about what weather is and how to predict it is pretty useful information.
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So what is weather exactly?
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Weather describes what it is like outside at any given time of day.
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It can be hot or cold,
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wet or dry, clear or cloudy, or calm or stormy.
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Most of the time, it is at least a few of these things all at once.
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These changes in weather are because of a layer of gases that surround the Earth called the the atmosphere.
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The atmosphere also acts as a shield, protecting life and helping keep our planet at a safe temperature.
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Weather also depends on a place's distance from the equator,
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which is an imaginary line that separates the northern and southern halves of the earth.
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The closer a place is to the equator, the warmer it will be.
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In fact, where you live on the planet has a huge impact on what weather you will see.
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For example, the weather near the ocean is often a lot different than the weather near a tall mountain range.
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Here is an interesting fact.
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A meteorologist is a person who studies and predicts the weather.
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You might have even seen a meteorologist sometime on the news.
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They are the people who stand in front of a weather map and give forecasts,
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or educated predictions, of what the weather will be like during the week in the area where you live.
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Cool, right?
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Now that we have talked about what weather is, let's talk about the different types of weather and how each are measured.
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Hot or Cold First off, weather can be hot or cold, or somewhere in between.
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The way that this hotness or coldness is measured is by temperature.
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Temperature is based on the motion of energy and the speed of gas molecules in the air.
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If the gas molecules are moving faster, the temperature will get higher.
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meaning that the weather gets hotter.
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Can you guess what is used to determine temperature? That is right!
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It is a tool called a thermometer and it measures temperature in units called degrees.
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Wet or dry Have you ever been near the ocean?
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What about a desert?
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The air around you can feel different depending on where you are in the world.
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This difference is called humidity, which tells us the amount of water vapor in the air.
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Even though you cannot see this water, you can definitely feel it.
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The higher the humidity, the more moisture or water vapor there is in the air.
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Here is another interesting fact.
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If there is too much water vapor, it will begin to rain.
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Humidity is measured by a tool called a hygrometer.
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Clear or cloudy Did you know that air pressure affects whether or not it is a clear or cloudy day?
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Remember when we talked about the atmosphere?
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Well, air pressure is the weight of the atmosphere pressing down on the earth,
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which is why it is also sometimes called atmospheric pressure.
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Like our old friend humidity, air pressure affects all parts of the weather each day.
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How is air pressure measured, you ask?
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By a tool called a barometer.
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There are two types of air pressure, high and low.
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High pressure usually means that the weather will be fair and sunny.
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Low pressure, on the other hand, brings clouds, rain, or snow.
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Have you ever wondered what causes thunderstorms?
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A pocket of strong, low pressure.
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You can literally feel it in the air.
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4. Calm or Stormy When you find yourself stuck in a storm,
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you might notice that wind is almost always involved.
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Wind is air, moving from higher pressure areas to lower pressure areas.
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Wind speed is also affected by the heating of the Earth's surface and the rotation of the Earth.
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The speed of wind can also be changed by the landforms around it.
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Stuff like mountains, bodies of water, and vegetation.
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Which is why sometimes wind can start as a gentle breeze and then change into a super strong gust.
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The airspeed of wind is measured by a device called an anemometer.
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Now that is a fascinating fact you can share with a friend.
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Are you ready to review what we have learned?
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Let's go!
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True or False A Paleontologist studies and predicts the weather False.
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A meteorologist studies and predicts the weather.
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A paleontologist studies fossils.
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Fill in the blank.
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Blank tells us how much water vapor is in the air at a given time.
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Humidity.
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What is the name of the protective layer of gases that surround the Earth?
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The atmosphere.
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True or false?
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A barometer measures air pressure.
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True.
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Name one type of weather that we discussed today.
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You're right.
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Hot or cold, wet or dry, clear or cloudy, or calm or stormy.
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Nice job, Weather Wonders!
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No matter if you live near the equator or on top of a tall mountain,
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you will always be surrounded by weather.
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The next time you are outside, try to see if you can figure out exactly what the weather is like using all the information you have learned today.
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Hope you had fun learning with us.
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Visit us at learnbright .org for thousands of free resources and turnkey solutions for teachers and homeschoolers.
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