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Weathe r. What is weather? Weather is defined as the conditions of the atmosphere at a particular time and place. What is the atmosphere? – The mixture.

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Presentation on theme: "Weathe r. What is weather? Weather is defined as the conditions of the atmosphere at a particular time and place. What is the atmosphere? – The mixture."— Presentation transcript:

1 Weathe r

2 What is weather? Weather is defined as the conditions of the atmosphere at a particular time and place. What is the atmosphere? – The mixture of gases that surround the Earth. – Weather takes place in the troposphere.

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4 Factors that influence weather: Heat energy Air pressure Winds Moisture

5 What drives (is responsible) for weather? Solar energy! The sun provides the energy that drives all of the Earths atmospheric movement and ocean currents resulting in weather and climate!

6 Earths Revolution In either picture, where are most of the suns rays hitting?

7 The suns rays hit the equator! From Tropic to Tropic!

8 How do the suns rays affect Earths land temperatures? The suns rays heat/warm the land (continents). The land is warmer near the equator because of the direct rays and cooler towards the poles.

9 How do the suns rays affect Earths ocean temperatures? The suns rays heat/warm the oceans. The water is warmer near the equator because of the direct rays and cooler towards the poles.

10 How do the ocean and land temperatures affect air masses above them? Oceans take 4x longer to heat and cool verses land! Land warms faster causing the air above it rise because it has less density and more volume. This creates a LOW pressure system The air cools becomes more dense and sinks because it has less volume. This creates a HIGH pressure system. This movement of air results in a SEABREEZE!

11 How do the ocean and land temperatures affect air masses above them? Oceans take 4x longer to heat and cool verses land! Ocean water takes longer to cool so it is warmer causing the air above it rise because it has less density and more volume. This creates a LOW pressure system The air cools becomes more dense and sinks because it has less volume. This creates a HIGH pressure system. This movement of air results in a LANDBREEZE!

12 If most of the suns energy hits the equator, how does radiant energy reach the poles? Winds!

13 Why does weather change? Weather changes each day because the air in our atmosphere is always moving, distributing energy from the sun!


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