2. MOUNTAINS
Mountains are raised parts of the earth´s surface.

3. Hills
Hills have a lower altitude than mountains.

4. Mountain range
 Several mountains grouped together are called mountain range

5. Mountain chain
 A long line of mountain range is called mountain chain.

6. Plateau
 A plateau is a plain at a high altitude.

7. Coastal plains
 Coastal plains are flat land near the coast

8. Depressions
 Depressions are plains wich are lower than the surronding land.

9. Valleys
 Valleys is a low areas between mountains.
 Rivers are often found in valleys.