2.2

Question 1

composition

Answer 1

The chemical makeup of a rock; describes either the minerals or other materials in the rock.

Question 2

Intrusive igneous rock

Answer 2

Rock formed from the cooling and solidification of magma beneath the Earth’s surface

Question 3

Extrusive igneous rock

Answer 3

Rock that forms as a result of volcanic at or near the Earth’s surface

Question 4

Felsic Rock

Answer 4

The light-colored rocks are rich in elements such as aluminum, potassium, Silicon and sodium

Question 5

Mafic rock

Answer 5

Mafic rocks are rich in calcium, iron, magnesium and potassium

Question 6

Volcano neck

Answer 6

A volcano neck forms when a dike or stock is exposed to the surface. The rock around it erodes away and only the igneous rock is left behind

Question 7

Dike

Answer 7

A dike is a sheetlike body of intrusive rock that cuts across other rock layers

Question 8

Stock

Answer 8

A stock is a large body of intrusive rock

Question 9

Batholith

Answer 9

A Batholith is the largest kind of intrusive rock body

Question 10

Sill

Answer 10

A sill is a sheetlike body of intrusive rock that is parallel to other rock layers