UK Landscapes (Geology) : Igneous Rocks

Question 1

how is igneous rock formed?

Answer 1

when magma and lava cools and solidifies

Question 2

what are the two types of igneous rocks?

Answer 2

intrusive and extrusive

Question 3

how do intrusive igneous rocks form crystals?

Answer 3

cools slowly below the surface of the earth leaving large crystals

Question 4

how do extrusive igneous rocks form crystals?

Answer 4

lava cools quickly above ground leaving large crystals

Question 5

what are examples of igneous rocks?

Answer 5

granite and basalt

Question 6

what are some properties of granite?

Answer 6

• impermeable
• large crystals (intrusive)
• form tors

Question 7

what are some properties of basalt?

Answer 7

• hard and impermeable
• as lava cools it can form columns
• small grains / crystals