3.13.1. Digital Elevation Models (DEMs)

Try these first

1. 1.

   What does DEM stand for?

   Hint

   Think about what we call elevation information in a digital format.

2. 2.

   Name one source for DEMs.

   Hint

   Consider significant satellite missions that provide elevation data.

3. 3.

   What is the primary purpose of a Digital Elevation Model (DEM)?

   • To represent vegetation
   • To provide terrain elevation
   • To record land use

   Hint

   Think about what 'Digital Elevation' refers to.

4. 4.

   True or False: DEMs can be generated from both stereo pairs and radar data.

   • True
   • False

   Hint

   Recall the methods mentioned for creating DEMs.

5. 5.

   How would using a lower resolution DEM impact urban planning in hilly regions?

   Hint

   Think about how detailed terrain information helps in planning steep areas.

6. 6.

   Design a mini-project utilizing DEMs for a local watershed assessment. Outline the steps you would take.

   Hint

   Consider how you can use elevation data to inform water flow.