Presentation on theme: "World Climate Patterns Earth’s Movement in Space."— Presentation transcript:
World Climate Patterns Earth’s Movement in Space
Weather: The combination of temperatures, precipitation, cloud cover, and winds that are EXPERIENCED DAILY Example: 20 ⁰ C with light showers. Climate: The LONG TERM pattern of weather conditions. Example: Newfoundland generally has long cold winters and short warm summers.
Write down if the following statements refer to weather or climate 1. It is -5 ⁰C and snowing 2. The area has cool, wet winters. 3. The summers are hot and dry 4. It is 20⁰C and sunny 5. It is cloudy and looks like it could rain.
Earth moves in two general ways. 1. Rotation 2. Revolution Other point Tilt
The turning of Earth on its axis. Averages about 24 hours in duration. Counter clockwise when viewed from above the north pole. From west to east, or eastward
Earth is slightly tilted on its axis. About 23.5 ⁰ This is the reason for the seasons In January the northern hemisphere is tilted away from the sun, causing winter. In July the northern hemisphere is tilted toward the sun, causing summer. In spring and summer the axis is not tilted toward or away from the sun. video video
Having a day and night of equal length. This occurs when the sun is directly above the equator. The Equinox is the specific moment in time. Happens in spring on March 20 or 21 Happens in fall on September 22 or 23
The time at which the overhead Sun is furthest from the equator and appears to stand still before returning towards the equator. The longest day occurs at the summer solstice. June 21 the shortest day at the winter solstice. December 22
Regardless of the time of year Earth’s surface only receives 49% of the total solar radiation that enters the atmosphere. What happens to the other 50%? 6% scattered in the atmosphere 17% absorbed in particles and gasses in the atmosphere 4% reflected off of Earth’s surface 24% reflected by clouds
On cloudless days, more radiation will reach the surface, but more will be reflected back too. This causes: Higher temperatures in the day Lower temperatures at night as any heat from the surface escapes On Cloudy days less radiation will reach the surface, however once it gets in it becomes trapped. This causes: Lower daytime temperatures More moderate night time temperatures This is why temperature ranges between night and day are less when skies remain cloudy.