Term 4 Earth Science

Question 1

Abundance

Answer 1

If there is a lot of something, it is described as being abundant

Question 2

Acid rain

Answer 2

Rain that contains dissolved acidic gases such nitrogen oxides and Sulfur dioxide

Question 3

Atmosphere

Answer 3

The layers of gases that surround the earth. The important gases in the atom sphere are nitrogen, oxygen and carbon dioxide

Question 4

Biological weathering

Answer 4

The breaking down of rocks because of the actions of living organisms, such as trees and burrowing animals

Question 5

Chemical weathering

Answer 5

The erosion of rocks by the chemicals that react with minerals

Question 6

Core

Answer 6

The innermost of the earth

Question 7

The outer layer of the earth on top the mantle

Answer 7

Crust

Question 8

Erosion

Answer 8

The wearing of rock, soil or any solid minerals

Question 9

Extrusive

Answer 9

Extrusive rock is formed from lava and magma that cools quickly at the surface

Question 10

Grain

Answer 10

A small particle in a rock

Question 11

Igneous

Answer 11

Rocks that formed under very hot conditions within the earth e.g basalt and obsidian

Question 12

Intrusive

Answer 12

Intrusive rock is formed when hot molten magma is forced it small crack between layers of other types rocks

Question 13

Lava

Answer 13

Molten rock that is released from the earth’s core in a volcano

Question 14

Magma

Answer 14

Molten rock found within the earth

Question 15

Mantle

Answer 15

A zone of hot rock In the interior of the earth located between the outer crust and the molten core.

Question 16

Metamorphic rock

Answer 16

A type of rock formed under intense heat and pressure

Question 17

Permeable

Answer 17

Something that allows water to pass through it

Question 18

Porous

Answer 18

Lots of void space

Question 19

Sedimentary rock

Answer 19

Rocks that are formed through the deposition of sediments

Question 20

Rock cycle

Answer 20

All the processes that are included in creating a rock

Question 21

Hardness

Answer 21

Restinace of the rock

Question 22

Colour of the mineral

Answer 22

Colour

Question 23

Streak

Answer 23

The colour of the powdered mineral

Question 24

Lustre

Answer 24

The extent to which the surface of the mineral reflects the light

Question 25

Density

Answer 25

The amount of matter contained in a specific volume

Question 26

Cleavage

Answer 26

The way the mineral splits apart

Question 27

The crystal shape

Answer 27

Habit

Question 28

When did Pangea exist

Answer 28

240million year ago

Question 29

When was Pannonia formed

Answer 29

600 million years ago

Question 30

When did rodinia exist

Answer 30

1 billion years ago

Question 31

Properties of the atmosphere

Answer 31

A large amount of carbon dioxide
Little or no oxygen
Small amounts of other gases

Question 32

How high is the Stratosphere

Answer 32

50km high

Question 33

Where is the Thermosphere

Answer 33

1000 km high

Question 34

How high is the Mesosphere

Answer 34

85km high

Question 35

Where is the Toposhere

Answer 35

20km high