1. Earth’s Characteristics

2. 1)¾ of Earth’s surface is covered by water (some is frozen) Antarctica/Greenland= ice Oceans/rivers/lakes, etc.=water

3. 2) Earth has an atmosphere. A thin, blanket of air (gas) made mostly of nitrogen and oxygen Made up of 4 layers Reason life can exist on Earth Provides oxygen Keeps surface warm Protects us from harmful radiation from the sun 0-11 miles 11-31 miles 31-50 miles 50-370 miles

4. 3)Earth has an elliptical orbit.

5. 4) Earth has a tilted axis. Orbit and Tilt causes 4 seasons

6. 5) Earth is spherical. Globe-shaped