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What Affects Weather Patterns
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What Affects Weather Patterns


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  • 1. What Affects Weather Patterns?
  • 2. Location Affects Weather The equator is an imaginary line that divides Earth in half horizontally. Latitude is the distance north and south of the equator. A place’s latitude helps determine its weather.
  • 3. Climate Zones Climate is the average weather of a place over a long period of time. There are 3 types of climate zones: Polar - farthest from equator (cool to cold all year) Temperate - warm & cool, tend to have seasons Tropical - closest to the Equator (warm to hot all year)
  • 4. Climate Zones
  • 5. Hemispheres Each half of the Earth is a hemisphere. Northern Hemisphere is North of (above) the Equator Southern Hemisphere is South of (below) the Equator The seasons are opposites in each Hemisphere: When it is fall in NC in the Northern Hemisphere it is spring in the Southern Hemisphere.
  • 6. Geography Affects Weather Mountains affect Temperature Temperatures are cooler in the Mountains of Western NC than in the flatter Central and Eastern parts of the state. Mountains also affect Precipitation Mountains create a rain shadow
  • 7. Rain Shadow - Explanation Think of warm air moving toward a mountain. As the air reaches the mountain, it is forced to move upward because of the shape of the mountain. As the air moves upward, it cools. The water in the air condenses and falls as precipitation, producing a wet side of the mountain. That leaves cool, dry air, which moves over the top of the mountain. Then it begins to move down along the slope of the mountain. As it sinks, it absorbs heat from the land and can hold more water. This often produces a dry area, or desert, on the far side of the mountain. The dry area is called a rain shadow.
  • 8. Geography Affects Weather Oceans and lakes affect weather too. Places closer to large bodies of water have milder weather. Water warms and cools much more slowly than land. Areas near oceans tend to get a lot of precipitation. In winter, warmer ocean water keeps nearby land warmer. In summer, cooler ocean water helps keep the land cool. Temperatures along the coast of NC tend to be milder than those in other parts of the state.