Question

8 which mineral group is the most abundant in earths crust? a. carbonates b. oxides c. silicates d. sulfides 9. what characteristic of the lithosphere makes it different from the asthenosphere? a. its liquid state b. its rigid nature c. its high temperature d. its magnetic properties 10. what is the approximate thickness of earths crust? a. 5 - 70 km b. 100 - 200 km c. 200 - 400 km d. 400 - 600 km 11 the san andreas fault is an example of what type of plate boundary? a. convergent boundary b. transform boundary c. divergent boundary d. subduction boundary

Explanation:

• For question 8: Silicates are the most abundant mineral group in Earth's crust due to the prevalence of silicon and oxygen.
• For question 9: The lithosphere is rigid while the asthenosphere is semi - molten and can flow, making rigidity a key differentiator.
• For question 10: The approximate thickness of Earth's crust ranges from about 5 - 70 km, with oceanic crust being thinner and continental crust thicker.
• For question 11: The San Andreas Fault is a well - known example of a transform plate boundary where two plates slide past each other.

Answer:

1. C. Silicates
2. B. Its rigid nature
3. A. 5 - 70 km
4. b. Transform boundary