1. The Earth as a System
Earth’s Spheres

2. Earth’s Sphere Atmosphere Hydrosphere Cryosphere Geosphere Biosphere
Anthrosphere

3. Atmosphere
The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night.
A gaseous sphere and it envelopes the Earth,
Consists of a mixture of gases composed primarily of nitrogen, oxygen, carbon dioxide, and water vapor.
Earth's atmosphere can be divided into five main layers.
These layers are mainly determined by whether temperature increases or decreases with altitude.

4. Hydrosphere
often called the "water sphere" as it includes all the earth's water found in the oceans, glaciers, streams, lakes, the soil, groundwater, and in the air.
interacts with, and is influenced by, all the other earth spheres.
All of the water on Earth
71% of the earth is covered by water and only 29% is terra firma
The cryosphere is the part of the earth's hydrosphere comprised of frozen water.

5. Geosphere
The Earth's solid surface, often called the crust of the earth. It includes continental and oceanic crust as well as the various layers of the Earth's interior.

6. Inside the Earth

7. Composition (What it is made of)
Crust
Mantle
Core

8. The Crust Outer layer 5-100 km thick 2 types of crust
Oceanic (very dense, made of basalt)
Continental (less dense, made of granite)

9. Oceanic and Continental Crust

10. The Mantle
Middle layer
Very thick layer

11. The Core
Made mostly of iron
1/3 of the earth’s mass
Very hot

12. Earth’s Layers How are the earth’s layers similar to an egg?
Shell=crust
Egg white=mantle
Yolk=core

13. Physical Structure of the Earth (5 Layers)
Lithosphere- rigid outer layer (crust)
Asthenosphere- solid rock that flows slowly (like hot asphalt)
Mesosphere- middle layer
Outer Core- liquid layer
Inner Core- solid, very dense

14. Tectonic Plates Earth’s crust is broken into about 19 pieces
These plates move on top of the asthenosphere

15. Biosphere
The term "biosphere" was coined by geologist Eduard Suess in 1875, which he defined as
"The place on Earth's surface where life dwells.“
All life on earth, including man, and all organisms.
The life zone on our planet distinguishes our planet from the others in the solar system.

16. Anthrosphere
The anthrosphere is that part of the environment that is made or modified by humans for use in human activities.
As human technology becomes more evolved, so do the impacts of human activities on the environment.
Man and his direct ancestors
The human population, it’s buildings,dams, and other constructions.

17. Create a foldable Include the spheres of Earth Atmosphere Hydrosphere
Geosphere (make sure to include all parts)
Biosphere
Anthrosphere
Page 7-9 in your book