- •Text 4b weathering and erosion of rocks
- •Learn the essential vocabulary of the unit:
- •2. Pronounce correctly:
- •Read and translate the following word combinations:
- •4. Read and translate the text: weathering and erosion of rocks
- •5. Answer the following questions:
- •6. Complete the statements according to the contents of the text:
- •7. Find the English equivalents in the text:
- •10. Match the words and their definitions:
- •11. Complete the following sentences with the given words in an appropriate form and define their meaning in each case:
- •12. Match the following word combinations with their equivalents and use them in the sentences of your own:
- •13. Fill in the prepositions:
- •In by with into in to beneath as from on
- •14. Fill in the articles if necessary:
- •14. A three-minute talk. Discuss these questions with your group mates:
- •15. Complete a project: “The Earth’s Crust”.
14. Fill in the articles if necessary:
1. Intrusive igneous rocks (e.g. granite) are formed deep beneath … Earth's surface. 2. Physical weathering can occur due to temperature, … pressure, frost. 3. The process of peeling off is also called … exfoliation. 4. Frost weathering is the collective name for … several processes where ice is present. 5. All rocks exposed on the surface are decomposed to … some degree. 6. It is caused by the approximately …10% expansion of ice. 7. Thus, … water causes complex and varied changes. 8. In general, chemical weathering is an acid attack on the rocks, in particular on … most abundant minerals. 9. … most commonly observed is the oxidation of Fe2+ (iron). 10. Natural waters contain … many dissolved substances that can act as solvents.
14. A three-minute talk. Discuss these questions with your group mates:
a) the difference between the two types of weathering;
b) oxidation of iron.
15. Complete a project: “The Earth’s Crust”.