QUESTIONS
1. Define what is meant by permafrost and distinguish between the main types which exist: CONTINUOUS, DISCONTINUOUS and SPORADIC.
2. What are the 3 types of periglacial climate ?
3. Define the following words: talik, active layer, permafrost table. Include a diagram in your answer.
4. What causes the active layer to thaw ?
5. What happens when the active layer starts to thaw ?