Climate and Weather. Climate vs. Weather Weather= condition of the atmosphere in one place during a period of time – Changes quickly – Short-term aspect.
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Presentation on theme: "Climate and Weather. Climate vs. Weather Weather= condition of the atmosphere in one place during a period of time – Changes quickly – Short-term aspect."— Presentation transcript:
Climate vs. Weather Weather= condition of the atmosphere in one place during a period of time – Changes quickly – Short-term aspect of climate Climate= weather patterns that an area experiences over a long period of time – Doesn’t often change – Very predictable
Changes in Sunlight Earth’s Tilt – Axis: imaginary line running from the North Pole to the South Pole through Earth’s center – Axis is tilted at an angle of 23.5° – The angle of tilt affects Amount of direct sunlight Temperature Earth’s Rotation – The Earth rotates on its axis once every 24 hours – One hemisphere faces the sun at a time
Changes in Sunlight Earth’s Revolution – Earth is also orbiting around the sun – Takes 365 days to complete one trip Earth’s Revolution + Tilt – Cause changes in the angle and amount of sunlight that reach different locations on Earth – Cause seasons
The Greenhouse Effect The Greenhouse Effect = the Earth’s atmosphere traps some heat from the Sun and keeps it from escaping back into space Many scientists believe that too much Carbon Dioxide in the atmosphere has caused too much heat to be trapped and has led to rising global temperatures What problems could this cause?
What factors affect climate? Latitude: – High latitudes receive continuous (but indirect) sunlight, depending on the time of year (polar areas) – Low latitudes receive direct rays of the sun year round (warm to hot climates) – Mid-latitudes have a temperate climate with dramatic seasonal weather changes Landforms: - The windward side of mountains receive extra rain, whereas the opposite (leeward) side of mountains receive very little rain and are often desert-like areas
What factors affect climate? Elevation: – Atmosphere thins as elevation increases – The higher up, the colder it is – Many mountains have snow year-round Winds: – Can bring in cold air or warm air – Create high or low pressure systems Oceans: – Areas around water tend to be more moderate in temperature – Warm currents bring warm water from the Equator – Cold currents bring cold water from the Polar regions – El Niño reverses wind/ocean patterns