The Rock Cycle

Question 1

how are igneous rocks formed

Answer 1

type of rock formed from the solidification of magma

Question 2

how are sedimentary rocks formed

Answer 2

made up of other rocks that are loosened by weathering,

Question 3

sedimentation

Answer 3

the process of settling or being deposited as a sediment.

Question 4

inner core

Answer 4

solid

Question 5

outer core

Answer 5

solid

Question 6

mantle

Answer 6

semi-liquid and solid

Question 7

lithosphere

Answer 7

outer part of the mantle, consisting of tectonic plates

Question 8

how do tectonic plates float on the mantle

Answer 8

they move around slowly

Question 9

crust

Answer 9

solid

Question 10

what’s the outer core made out of?

Answer 10

liquid nickel and iron

Question 11

what’s the mantle made out of?

Answer 11

silicon, magnesium and iron

Question 12

describe some features of igneous rocks

Answer 12

usually contain crystals
rarely react with acids
don’t contain fossils

Question 13

extrusive igneous rock

Answer 13

formed when magma flows onto the Earth’s surface

Question 14

intrusive igneous rocks

Answer 14

formed from magma below the Earth’s surface in the crust

Question 15

how do fossils form

Answer 15

when dead organisms are covered in layers of sediment before they can rot away

Question 16

how are metamorphic rocks formed

Answer 16

existing rocks that undergo heat and/or pressure change

Question 17

how can rocks change from one type to another

Answer 17

due to processes such as weathering, erosion and large Earth movements

Question 18

what’s the difference between weathering and erosion

Answer 18

erosion is when rock particles are worn away and taken somewhere else.
weathering is when pieces of rock break off