Rock cycle

Question 1

How old is the oldest rock?

Answer 1

4.2 billion years ago was the oldest rock

Question 2

How are igneous rocks formed?

Answer 2

Igneous rocks are formed when magma is cooled

Question 3

What forms sedimentary rocks?

Answer 3

Compaction and Cementation of sediments form sedimentary rocks.

Question 4

What forms metamorphic rocks?

Answer 4

Heat and pressure from igneous and sedimentary rocks can form metamorphic rocks.

Question 5

What is weathering?

Answer 5

Weathering is the process of breaking large rocks into smaller rocks

Question 6

What is erosion?

Answer 6

Erosion is the movement of rock and soil from one place to another

Forms from wind, ice, gravity, and water