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  1. All About Humidity - Education

    At 100 percent relative humidity, the air is completely saturated with water vapor. If the air cools a little, such as rising to a higher altitude, the water vapor can condense as fog, clouds, and other forms of …

  2. Humidity - National Geographic Society

    Oct 19, 2023 · Humidity is blamed for all kinds of negative things, including mold in your house (usually the bathroom, where it's wet much of the time), as well as malfunctions in regular household electronics.

  3. Weather or Climate ... What's the Difference? - Education

    Oct 19, 2023 · As with weather, climate takes into account precipitation, wind speed and direction, humidity, and temperature. In fact, climate can be thought of as an average of weather conditions …

  4. Air Mass - Education

    Oct 19, 2023 · Air masses form over large surfaces with uniform temperatures and humidity, called source regions. Low wind speeds let air remain stationary long enough to take on the features of the …

  5. Water Cycle - National Geographic Society

    Apr 29, 2024 · Water is one of the key ingredients to life on Earth. About 75 percent of our planet is covered by water or ice. The water cycle is the endless process that connects all of that water. It …

  6. Front - National Geographic Society

    Oct 19, 2023 · One type of air is usually denser than the other, with different temperatures and different levels of humidity. This clashing of air types causes weather: rain, snow, cold days, hot days, and …

  7. Weather - National Geographic Society

    Weather is the state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloud cover. It differs from climate, which is all weather conditions for a particular …

  8. The Greenhouse Effect and our Planet - Education

    Dec 9, 2024 · The greenhouse effect happens when certain gases, which are known as greenhouse gases, accumulate in Earth’s atmosphere. Greenhouse gases include carbon dioxide (CO2), …

  9. The Five Major Types of Biomes - Education

    May 7, 2025 · A biome is a large area characterized by its vegetation, soil, climate, and wildlife. There are five major types of biomes: aquatic, grassland, forest, desert, and tundra, though some of these …

  10. Dew - National Geographic Society

    Oct 19, 2023 · state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness.