Earth science

Question 1

Minerals

Answer 1

Any solid object is made out of minerals.

Question 2

Lithosphere

Answer 2

the hardest and outer layer of earth and also the thinnest layer.

Question 3

Magma

Answer 3

a very hot mixture of molten rocks and gases. forms just below the earths lithosphere.

Question 4

Sediments

Answer 4

Material that is broken down by weathering or erosion and is moved by wind or water and is moved into layers.

Question 5

Lava

Answer 5

hot lava or semi fluid rock that has erupted from a volcano.

Question 6

Intrusive

Answer 6

When magma forms inside the crust and rocks are formed

Question 7

Extrusive

Answer 7

when lava settles on the outside and rocks can form in the air or when the hit land

Question 8

Igneous

Answer 8

rocks that are formed from lava or magma

Question 9

Abrasive

Answer 9

a property of an object that scratches another

Question 10

Batholiths

Answer 10

Intrusive rocks that have a large bidy of mass that can span across 100 kilometeres

Question 11

Lustre

Answer 11

The amount of shine that a mineral / rock can reflect

Question 12

Streak

Answer 12

the color that comes out when u starch the mineral / rock against a harder surface.

Question 13

Sandstone

Answer 13

sandstone is a sedimentary rock that is formed from grains of sand that are being cemented over a long time.

Question 14

Shale

Answer 14

Shale is a sedimentary rock that formed from layers of consolidation of clay / mud.

Question 15

Conglomerate

Answer 15

Conglomerate is a sedimentary rock that is formed by multiple sedimentary rocks cemented together.

Question 16

Mudstone

Answer 16

Mudstone is a fine grained sedimentary rock without layering

Question 17

Siltstone

Answer 17

Siltstone has grains that are slightly bigger than those of Mudstone or Slate.

Question 18

Coal

Answer 18

Coal is a sedimentary rock that is formed from organic matter over the course of millions of years.

Question 19

Limestone

Answer 19

Limestone is a sedimentary rock formed from the remains of sea organisms. It consists mainly of calcium carbonate.

Question 20

Rock salt

Answer 20

Rock salt is a sedimentary deposit formed when a salt lake or seabed dried up. Its main chemical is sodium chloride.

Question 21

Mineral Ores

Answer 21

Mineral Ores are rocks mined to obtain a metal or other chemical within them

Question 22

Mining

Answer 22

Mining is the extraction of natural resources from the Earth

Question 23

Environmental Impact Statement

Answer 23

Environmental Impact Statement is the study of the possible effects of a planned project on the environment

Question 24

Rehabilitated

Answer 24

Rehabilitated is when a object is restored to its previous condition

Question 25

Overburden

Answer 25

Overburden is the waste rock removed from below the topsoil. This rock is replaced when the area is restored.

Question 26

Open-cut-mining

Answer 26

Open-cut-mining is when scours out soil and rocks on the surface of the land

Question 27

underground mining

Answer 27

underground mining is mining that uses shafts and tunnels to remove rock from deep below the surface