Chapter 3 Section 2 The Sun

1. Chapter 3 Section 2 The Sun

2. Structure &Atmosphere of the Sun • Starting with the outside working in.

3. Corona • Corona ends in A • A – stands for atmosphere • Atmosphere floats • above the Sun

4. Chromosphere • Chromosphere – outside below Corona • Chrome wheels go on outside of the car. • The tires on them are usually super thin (just like the Chromosphere)

5. Photosphere Dang!!!!! • They say the real beauty is on the inside….Only ugly people say that. • Otherwise, why we would we have models or Mr. Pullins. • We take the pictures or photos on the outside right… The photosphere is the visible outside layer of the sun we see.

6. Convective Zone • Convective Zone sounds like convict. • We know what we do with convicts… • We lock them up away from society • The Convective Zone is under the photosphere just like convicts are beneath society. • Stinky convicts make lots of farts… just like how gases circulate in the Convective Zone

7. Radiative Zone • Only dense people work near radiation. • These thick-headed people think they can attain super powers. • Just like the radiative zone of the sun… thick and dense

8. Energy Production • How sun gets it energy… Nuclear Fusion • Nuclear Fusion – two or more small nuclei join together to form a larger nucleus • This process releases energy

9. Solar Activity • Sunspots – cool dark areas on photosphere • Solar Flare – super hot and bright eruptions… • can extend thousands of kilomometers in seconds

10. Earth’s Seasons

11. Earth’s Movement • Rotation- the spinning of Earth on it’s axis. • Causes night and day • Takes about 24 hours • Revolution- the movement of Earth in space around the sun. • Takes about 365.25 days

12. Longitude vs. Latitude • Longitude- lines that run vertically on the globe. • Prime meridian- 0 degrees on the globe. • Runs through the Eastern portion of Africa.

13. Latitude vs. Longitude • Latitude- lines that run horizontally on the globe. • Equator- 0 degrees on the globe. • Latitude lines are used to mark out 3 different types of regions • Tropic • Temperate • Polar

14. Tropic Zone • Tropic- between the latitudes of 23.5 degrees north (Tropic of Cancer) and 23.5 degrees south (Tropic of Capricorn). • Generally hot temperature. • Sun’s rays hit Earth directly at the equator.

15. Temperate Zone • Temperate- between the latitudes 23.5 degrees and 66.5 degrees. • Generally cooler than the Tropics. • The USA is in a Temperate zone.

16. Polar Zone

17. The Seasons • The seasons are caused by the tilt of Earth’s axis as it moves around the sun. • The Earth is tilted at 23.5 degrees. • (Take Notes)

18. The Seasons • Solstice- occurs when sun is directly overhead at latitudes 23.5 degrees north or south. • Summer solstice- June 21 in the Northern hemisphere. • Beginning of summer. • Winter solstice- December 21 in the Northern hemisphere. • Beginning of winter.

19. The Seasons • Equinox- neither hemisphere is tilted towards the sun. • The lengths of daylight and darkness are approximately equal. • Vernal equinox- March 21 in the Northern hemisphere. • Fall equinox- Sept 22 in the Northern hemisphere.

20. Incoming solar energy: • 30% reflected back into space by clouds, gases, and Earth’s surface. • 20% absorbed by clouds. • 50% absorbed by Earth’s surface. • Heats up the Earth.