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Weather Unit
| Term | Definition |
|---|---|
| precipitation | When water droplets or ice crystals in clouds get too heavy and fall back to Earth as rain, snow, sleet, or hail. |
| evaporation | The process where the sun's energy heats up water on the Earth's surface, causing it to turn into a gas called water vapor and rise into the air. |
| condensation | The process where water vapor in the air cools and changes back into tiny liquid water droplets, forming clouds. |
| transpiration | The process by which plants release water vapor into the atmosphere from their leaves. |
| Sun's energy | the engine/what powers the water cycle |
| dew | A thin layer of water that forms on surfaces near the ground, often seen in the morning or evening. |
| Water Vapor | Water in a gas form diffused in the atmosphere. |
| Clouds | Visible masses of tiny water droplets or ice crystals suspended in the atmosphere. |
| weather | the day-to-day conditions of the air around us, including things like temperature, rain, wind, and clouds. |
| climate | the usual pattern of weather in a place over a long period of time. |
| hemisphere | half of the Earth. The Earth can be divided into two halves in different ways — |
| wind | The movement of air from one place to another. It happens because the Sun heats Earth’s surface unevenly, causing warm air to rise and cool air to move in and take its place. |
| wind speed | how fast the air is moving from one place to another. |
| wind direction | where the wind is coming from |
| temperature | tells us how hot or cold something is. It measures how fast the particles in the air or an object are moving. |
| air pressure | weight of the air pushing down on Earth’s surface. |
| barometer | A tool that measures air pressure. |
| thermometer | A tool that measures temperature, or how hot or cold something is. |
| anemometer | A tool that measures wind speed, or how fast the air is moving. |
| wind vane | A tool that shows wind direction, or where the wind is coming from. |
| rain gauge | A tool that measures how much precipitation has fallen over a period of time. |
| air mass | a large body of air that has the same temperature and humidity throughout. |
| cloud cover | how much of the sky is filled with clouds. |
| clouds | tiny drops of water or ice that gather in the sky. |
| warm front | when warm air moves into an area with cold air. It usually brings slow, steady rain and then warmer weather. |
| cold front | when cold air pushes into an area with warm air. It often brings quick, heavy rain or storms, followed by cooler weather. |
| symbols | pictures or marks used on weather maps to show things like rain, wind, warm fronts, and cold fronts. They help us understand the weather quickly. |
| air pressure | the weight of the air around us pushing down on Earth. |
| Satellite Maps | Pictures of Earth taken from space that help us see clouds, storms, and weather patterns. |
| Severe Weather | Dangerous weather that can hurt people or damage buildings, like strong storms, tornadoes, or hurricanes. |
| Tornadoes | A fast-spinning column of air that touches the ground and can cause a lot of damage. |
| Hurricanes | Huge storms that form over warm ocean water with strong winds, heavy rain, and swirling clouds. |
| Equator | An imaginary line around the middle of Earth that divides it into the Northern and Southern Hemispheres. It is usually warm there. |
| Weather Balloon | A balloon that carries tools high into the sky to measure temperature, air pressure, and other weather information. |
| Radar | A tool that uses radio waves to detect where rain, snow, or storms are and how they are moving. |
| Current | A flow of air or water that moves in a certain direction. |
| Sea Breeze | A cool wind that blows from the ocean toward the land during the day. |
| Land Breeze | A wind that blows from the land out toward the ocean at night. |
| Coastal | Describes areas that are near the ocean or coast. |
Created by:
Hhellard
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