Planet Earth: More Practice

The rock cycle's three rock types, how each forms, and reading rock properties from a table.

9 questions, free, marked as you go with a worked explanation on every one.

What this covers

• rocks and the rock cycle

The questions

1. Which process turns loose sediment into sedimentary rock?
2. Which rock type forms when magma cools and solidifies?
3. Use the table below. Which rock type forms from heat and pressure without melting?
4. Which process could turn a metamorphic rock into magma?
5. In an undisturbed sequence of rock layers, which layer is the oldest?
6. Weathering breaks rock into smaller pieces. What is it called when those pieces are carried elsewhere?
7. What is it called when moved sediment settles out and builds up in a new location?
8. Use the table below. Which sample's texture points to it being metamorphic?
9. A layer of sediment builds up at 2 mm per year. How many years does it take to build a layer 500 mm thick?

Answer these free