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What is Climate?. Climate is the name for the general conditions of temperature and precipitation for an area over a long period of time. Climate is the.

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Presentation on theme: "What is Climate?. Climate is the name for the general conditions of temperature and precipitation for an area over a long period of time. Climate is the."— Presentation transcript:

1 What is Climate?

2 Climate is the name for the general conditions of temperature and precipitation for an area over a long period of time. Climate is the name for the general conditions of temperature and precipitation for an area over a long period of time. The climate of any region on the Earth is determined by two basic factors: temperature and precipitation. The climate of any region on the Earth is determined by two basic factors: temperature and precipitation.

3 Factors that Affect Temperature Latitude, elevation, and the presence of oceans currents are three natural factors that affect the temperature at a particular location. Latitude, elevation, and the presence of oceans currents are three natural factors that affect the temperature at a particular location. Latitude is a measure of the distance north and south of the equator. Latitude is a measure of the distance north and south of the equator. Elevation or altitude, is distance above sea level. As elevation increases, the air becomes less dense. As elevation increases, the temperature decreases. Elevation or altitude, is distance above sea level. As elevation increases, the air becomes less dense. As elevation increases, the temperature decreases.

4 Ocean currents is a river of water that flows in a definite path in the ocean. Warm water warms the air and cold water cools the air. So land areas near warm water currents have warm temperatures and areas near cold water currents have cool temperatures. Ocean currents is a river of water that flows in a definite path in the ocean. Warm water warms the air and cold water cools the air. So land areas near warm water currents have warm temperatures and areas near cold water currents have cool temperatures.

5 Factors That Affect Precipitation The two natural factors that affect the amount of precipitation at a particular location are prevailing winds and mountain ranges. The two natural factors that affect the amount of precipitation at a particular location are prevailing winds and mountain ranges.

6 Prevailing Winds is a wind that blows more often from one direction than from any other direction. These winds have a great influence on the climate of regions in their path. Different prevailing winds carry different amounts of moisture. Warm air can hold more moisture than cold air. Prevailing Winds is a wind that blows more often from one direction than from any other direction. These winds have a great influence on the climate of regions in their path. Different prevailing winds carry different amounts of moisture. Warm air can hold more moisture than cold air.

7 The amount of precipitation at a particular location is also affected by mountain ranges. A mountain range acts as a barrier to prevailing winds. The windward side of a mountain, or the side facing toward the wind, receives a great deal of precipitation. The leeward side of a mountain, or the side facing away from the wind receives little precipitation.

8 Climate Zones The three major climate zones on the Earth are the polar, temperate, and tropical zones. The three major climate zones on the Earth are the polar, temperate, and tropical zones.

9 Polar Zones Polar climates have the coldest average temperatures. The average yearly temperature remains below freezing most of the time. There is little precipitation in the polar zones. Polar climates have the coldest average temperatures. The average yearly temperature remains below freezing most of the time. There is little precipitation in the polar zones.

10 Temperate Zone In the areas of the temperate zones farther from the equator, snow is common in the winter. The closer to the equator, rain normally falls all year round. In the areas of the temperate zones farther from the equator, snow is common in the winter. The closer to the equator, rain normally falls all year round.

11 Tropical Zones Tropical zones have high temperatures and high humidity. Precipitation in the tropical zones is usually very heavy during part of the year. These zones have the warmest average yearly temperature. Tropical zones have high temperatures and high humidity. Precipitation in the tropical zones is usually very heavy during part of the year. These zones have the warmest average yearly temperature.

12 Marine and Continental Climates Within each of the three major climate zones there are marine climates and continental climates. Areas with marine climate receive more precipitation. A continental climate is drier.

13 The Four Seasons Most places on the Earth have four distinct seasons: winter, spring, summer, and autumn. Most places on the Earth have four distinct seasons: winter, spring, summer, and autumn. The different seasons are caused by the tilt of the Earths axis. The different seasons are caused by the tilt of the Earths axis. bjects/astronomy/planets/earth/Seasons.s html bjects/astronomy/planets/earth/Seasons.s html

14 Changes in Climate The three natural factors responsible for climate changes are: The three natural factors responsible for climate changes are: 1. The slow drifting of the continents 2. Changes in the suns energy output 3. Variations in the tilt of the Earths axis and the shape of the Earths orbit.

15 Human activities which include an increased level of carbon dioxide in the atmosphere can also lead to changes in climate. Human activities which include an increased level of carbon dioxide in the atmosphere can also lead to changes in climate.


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