Materials from the earth

Question 1

What are the 3 steps in the formation of sedimentary rock?

Answer 1

1. Layers of sediments in lakes/seas
2. Over long time, layers pressurized, squeezing out water
3. Fluids flowing through pores deposit cement

Question 2

What type of rock are limestone and chalk?

Answer 2

Sedimentary

Question 3

How are metamorphic rocks formed?

Answer 3

1. Heat/pressure on sedimentary rocks

3. As long as they don’t melt, called metamorphic.

Question 4

How are igneous rocks formed?

Answer 4

Molten magma pushes to crust before cooling and solidifying. Contain different minerals in randomly arranged interlocking crystals

Question 5

what are the two types of igneous rock?

Answer 5

Extrusive and intrusive

Question 6

What are the uses of limestone?

Answer 6

1. Used to produce other building materials

2. Used to make glass, heated with sand and sodium carbonate until it melts.