1. Do Now – 5 Minutes Topic – Anatomy of the Earth Based on the rules we learned yesterday, determine the chronological order of the strata shown below.

2. Homework Log on to successnetplus.com Read Earth’s “Spheres” on Pages 74 – 75.

3. Anatomy of the Earth Earth is a unique place where many types of matter continuously interacts with other forms of matter. Looking at the Earth, what are the four major parts that make up our Earth? Rocks Water Life Atmosphere

4. Anatomy of the Earth These different parts of the Earth are referred to as “spheres” of the Earth. They each sphere is formerly known as: Geosphere Hydrosphere Biosphere Atmosphere

5. Geosphere Geo – Latin prefix for Earth and ground. The geosphere extends from the center of the Earth to the surface of the Earth. The hard rock at, and below the surface is called the lithosphere.

6. Geosphere The top layer is called the crust. Oceanic crust is 5 – 10 km thick. Continental crust is 35 – 70 km thick. The mantle is the layer beneath the crust. The mantle is about 2,900 km thick. It is made of slow-flowing, solid rock.

7. Geosphere Earth’s center, called the core, has a radius of 3,500 km. The core is solid and made up of iron and nickel. It is incredibly dense.

8. Hydrosphere Hydro – Latin prefix for water. The hydrosphere is made up of all liquid water on the Earth. Oceans, lakes, rivers, marshes, groundwater, rain, and water in clouds are all part of it.

9. Hydrosphere Most of Earth’s water (97%) is salty and in the oceans. Of the remaining 3%, 2/3 rds of that water is frozen in the polar ice caps. The remaining 1% of the hydrosphere is liquid freshwater. Most of that is groundwater in the soil.

10. Biosphere Bio – Latin prefix for life. The biosphere is made up of all living things and the areas of Earth where they are found. Which spheres are interacting here?

11. Biosphere The biosphere includes all plants, animals, bacteria, fungi, and single-celled organisms found on Earth. Most of this life exists no deeper than 10 feet into the ground, or about 600 feet above the ground.

12. Atmosphere Atmo – Latin prefix for vapor or air. The atmosphere is made up of gases that surround and protect the Earth. It extends from the surface of Earth to 500 – 600 km above the surface of Earth.

13. Atmosphere Most of the gases in the atmosphere lie within 8 to 50 km of Earth’s surface. The atmosphere is about 78% Nitrogen, 21% Oxygen, and 1% other gases. The atmosphere traps energy from the sun, which keeps Earth warm. Weather and wind exist in the atmosphere.

14. Earth’s Spheres Do Earth’s spheres operate independently of each other? What seems to be the common link between each sphere?

15. Sphere Interactions Which spheres are interacting in this picture?

16. Sphere Interactions Which spheres are interacting in this picture?

17. Sphere Interactions Which spheres are interacting in this picture?

18. Sphere Interactions Which spheres are interacting in this picture?

19. Sphere Interactions Which spheres are interacting in this picture?

20. Sphere Interactions Your turn! What are examples of you interacting with the Earth’s different spheres that you experience on a daily basis.