1. Earth Systems

2. Atmosphere The air(gas) which surrounds our planet.
Consists mostly of Nitrogen(N ₂) and Oxygen(O₂).
Studied by Meteorologists

3. Hydrosphere All the water which covers the Earth.
-Studied by Oceanographers
All the water which covers the Earth.
Land water(2.8%) and Ocean water(97.2%).
Land water is divided into ground water, glaciers, lakes and rivers.

4. Geosphere
All the rocks, minerals, soil and dirt as well as material inside the Earth.
The geosphere is mostly composed of Oxygen and Silicon.
-Studied by Geologists

5. Biosphere
All of the living organisms on the planet and their environments.
Bacteria, Protozoans, Fungi, Plants, Animals
-Studied by Ecologists,
Environmental Scientists

6. Exosphere Encompasses everything beyond Earth.
Galaxies, Solar Systems, Planets, Moons
-Studied by Astronomers

7. Russian Meteor
The 55 foot wide rock, said by Nasa to have a mass of 10,000 tonnes, lit up the sky above the Urals region on Friday morning, causing shockwaves that injured 1,200 people and damaged thousands of homes in an event unprecedented in modern times.
Nasa estimated that the energy released as the meteor's disintegrated in the atmosphere was 500 kilotons, around 30 times the size of the nuclear bomb dropped on Hiroshima in 1945.
It entered the atmosphere at 44,000 miles per hour, taking 32.5 seconds to break up at an altitude of around 15 miles above the earth's surface.
The resulting explosion created a shockwave that blew out windows and set of car alarms in Chelyabinsk two and a half minutes later.

8. Interaction Between Spheres
Exosphere
-Astronomy
Geosphere
-Geology
Atmosphere
-Meteorology
Biosphere
-Ecology
Hydrosphere
-Oceanography

9. Homework
Research the relationship between two different spheres of science. Write a paragraph discussing the relationship and include several actual examples.
You will present in front of the class on Friday.