Topic 4 - The UK's Evolving Physical Landscape Flashcards
1
Q
what are the 3 types of rock
A
igneous
sedimentary
metamorphic
2
Q
how are igneous rocks formed
A
when molten rock from the mantle cools and hardens. the rock forms crystals as it cools down. igneous rocks are usually hard
3
Q
how are sedimentary rocks formed
A
when layers of sendiment are compacted together until they become solid rock
4
Q
how are metamorphic rocks formed
A
when other rocks are changed by heat and pressure. the new rocks become harder and more compact
5
Q
A
