Lesson 19

Today and yesterday we covered lesson 19. Lesson 19 covers hurricanes. A hurricane is a destructive storm characterized by strong winds and large amounts of rainfall. Something important to know is tropical depressions can build to tropical storms, which can build to hurricanes. They are measured in 5 categories. 1 being the least intense and 5 being the most intense. Tropical storms form when a great deal of warm water evaporates into the atmosphere. Also, as the storm moves over areas of warmer water, evaporation increases. Water vapor density is related to temperature. As the temperature rises, the water vapor increases. Hurricanes form over the ocean in places where there is extreme warm, moist air. they also form around low pressure systems.Moreover, something important to know is that there is scientific edivdence that our earth is warming, called global warming, which causes climate change. Global warming may increase the frequency and intensity of hurricanes on the planet.

Lesson 18: Lesson 18 went over humidity. Humidity is the density of the water vapor in the air at any given time. Humidity is dependent on air temperature and pressure. The temperature at which water vapor condenses, indicates how much water vapor is in the air. Something important to know is that there is an upper limit to the amount of water vapor that can be present in the atmosphere at a given temperature. Humidity is sometimes expressed as relative humidity, which is the amount of water vapor in the air compared to the maximum amount of water vapor possible for a specific temperature, expressed as a percent. Lastly, water vapor density is affected by both air temperature and air pressure.

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