Chapter 15 Heat Transfer Water in the Atmosphere Global Patterns Air Pressure Winds Relative Humidity Latitude and Temperature List the three temperature zones on the map and draw arrows to them. The latitude of the North Pole is ____________. The latitude of the Equator is _________. The latitude of the South Pole is ___________. Distance from Large Bodies of Water Alaska is about twice the size of Texas. Factors influencing temperature, such as distance from large bodies of water, affect this big state in different ways. Which climate data do you think describe Juneau? Fairbanks? Wind and Precipitation Mountains can form a barrier to humid air. What happens to the humid air when it encounters the mountains? Label the correct sides of the mountain WINDWARD and LEEWARD. Jet Streams Which arrow shows the polar jet stream on the diagram? Which arrow shows the subtropical jet stream? Label each. Reading a Mercury Barometer What would a low air pressure reading look like? An Aneroid Barometer An aneroid barometer has an airtight metal chamber, shown in red (arrow points to it). Which diagram shows the aneroid barometer under high pressure and which shows it under low pressure? Air Pressure: Effect of Altitude on Pressure and Density How densely packed would the molecules be at the different altitudes? Draw particles in circle. Explain the relationship between altitude (tall mountain) and air pressure: Wind Direction and Speed Based on the direction of the wind vane, which direction would the kite be flying? What tool measures wind speed?_________________________ Global wind systems move air across Earth’s surface. Explain how Earth’s rotation affects global winds in the Northern hemisphere. Define Land Breeze:_______________________________ Draw arrows to show how a land breeze develops. Relative Humidity This chart shows how relative humidity changes with temperature. Define humidity:_______________________ What tool measures humidity? ___________________________________ Relative Humidity Relative humidity is affected by temperature. What factors affect the weather? Evaporation will cool the wet bulb thermometer in a psychrometer. Water evaporates more slowly in moist air. Describe how a psychrometer works.