Rocks

Question 1

How are igneous and metamorphic rocks formed ?

Answer 1

Igneous rocks are formed by the lava or magma from the earth
and they can have small crystals or big crystals depending on where they are cooling in the volcano or out in the sea.

Metamorphic rocks are formed by extreme heat and pressure

Question 2

How are sedimentary rocks formed ?

Answer 2

Small bits of rock are carried along the river and deposited on the riverbed forming layers of sedimentary

Question 3

What is an example of chemical, biological and physical weathering ?

Answer 3

Chemical is acid rain
Biological is caused by plants and animals
Physical is caused by freeze thaw weathering

Question 4

Which type of rock has grains ?

Answer 4

Sedimentary

Question 5

Is Sedimentary, Igneous, Metamorphic hard or crumbly ?

Answer 5

Sedimentary is often crumbly
Metamorphic is Hard
Igneous is Hard

Question 6

What is an ore ?

Answer 6

A rock with enough natural metal in it that it is worth mining from