geology of the uk

Question 1

how are igneous rocks formed?

Answer 1

volcanic activity, lava cools on surface (extrusive), magma solidifies in earth (intrusive)

Question 2

what are the characteristics of igneous rock?

Answer 2

randomly arranged interlcoking crystals, MOST resistant to erosion

Question 3

what are examples of igneous rocks?

Answer 3

pumice, basalt, granite

Question 4

how is metamorphic rock formed?

Answer 4

earth movements cause other types of rock to be deeply buried in earth, here they experience extreme heat and pressure which changes chemical compositions

Question 5

what are characteristics of metamorphic rock?

Answer 5

changed due to heat/pressure, contains bands of crystal, resistant to erosion

Question 6

what are examples of metamorphic rock?

Answer 6

marble, shale.

Question 7

how is sedimentary rock formed?

Answer 7

made up of sediment of other rocks that have been eroded, transported and then deposited to the ocean floor, here they are compressed over millions of years

Question 8

what are the characteristics of sedimentary rock?

Answer 8

made up of layers, can contain fossils, soft rock LEAST resistant to erosion

Question 9

what are examples of sedimentary rock?

Answer 9

limestone, chalk, sandstone