1. Aim: What is Earth Science?

2. Earth Science: is four sciences rolled into one!

3. The first is: GEOLOGY which studies the Earth's interior and surface

4. The second is: ASTRONOMY which studies the universe, stars, planets, and moons

5. The third is: METEOROLOGY which studies the Earth's atmosphere: weather and storms

6. The fourth is: OCEANOGRAPHY which studies the Earth's oceans.

7. What is an Earth Science Event?

8. An EVENT is: An Occurrence on Earth that causes a change

9. Turn and talk: List an EVENT for each Branch of Earth Science in your note packet.

10. Here are some EVENTS for OCEANOGRAPHY:

11. Here are some EVENTS for METEOROLOGY:

12. Here are some EVENTS for ASTRONOMY:

13. Here are some EVENTS for GEOLOGY:

14. STOP! Which of the four branches of Earth Sciences seems most interesting to you?

15. The Four Spheres of Earth

16. What are the four spheres of Earth?

17. Atmosphere The atmosphere is the layer of gas that surrounds Earth above the surface of liquid water and rocky material.

18. Atmospheric Zones Troposphere Stratosphere Mesosphere Thermosphere  We LIVE HERE Each has its own distinct characteristics such as temp. and composition

19. Reference Table Question What is the percent by volume of Oxygen in the Troposphere? 21% What is the percent by volume of Nitrogen in the Troposphere? 78%

20. Biosphere The sphere that includes all living things on Earth Starts from the bottom of the ocean and goes up several km above the surface.

21. What is the Hydrosphere? The hydrosphere includes all the water on Earth

22. Reference Table Question What is the percent by volume of Oxygen in the Hydrosphere? 33% What is the percent by volume of Hydrogen in the Hydrosphere? 66%

23. Lithosphere The lithosphere is the outer solid part of the earth, including the crust and uppermost mantle

24. Reference Table Question What does the reference table call the lithosphere? CRUST What is the most abundant element by mass in the crust? Oxygen What is the most abundant element by volume in the crust? Oxygen

25. Exit Slip On a sheet of paper write your name, period, and date. Answer the following questions How do you think the four spheres interact? Could we have any of the single spheres without the others?