unit review Kade

Question 1

what in the mohs hardness scale

Answer 1

a scale used the find the hardness of an object

Question 2

what is an element

Answer 2

a pure substance

Question 3

what are crystals

Answer 3

the building blocks of minerals

Question 4

what is a mineral

Answer 4

an inorganic, naturally occurring solid material

Question 5

what 5 rules make something a mineral

Answer 5

1. inorganic
2. naturally occurring
3. solid
4. has a fixed chemical formula
   5 has a specific atomic arrangement

Question 6

what are the 6 crystal systems

Answer 6

1. cubic
2. tetragonal
3. hexagonal
4. orthorhombic
5. monoclinic
6. triclinic

Question 7

what is lustre

Answer 7

the shininess of an mineral

Question 8

what is colour

Answer 8

the colour of a mineral

Question 9

what is streak

Answer 9

a streak is the colour of the powdered form of a mineral

Question 10

what is cleavage

Answer 10

if a mineral breaks apart on a flat surface

Question 11

what is fracture

Answer 11

if a mineral breaks apart on a rough surface

Question 12

what is igneous rock

Answer 12

rock that forms when magma or lava cools and solidifies

Question 13

what is metamorphic rock

Answer 13

rock that changes

Question 14

what is sedimentary

Answer 14

rock made up of sediments

Question 15

what is magma

Answer 15

melted rock found under the earths crust

Question 16

what is lava

Answer 16

magma that has surfaced from under the earths crust

Question 17

what is intrusive rock

Answer 17

igneous rock that forms under the ground

Question 18

what do you need to change a rock into meta morphic

Answer 18

heat and pressure

Question 19

when did Pangea form

Answer 19

palezoic era

Question 20

in what era did rodenia form

Answer 20

precambrian

Question 21

what is a half life

Answer 21

it is when half of the parent material changes

Question 22

what is Gondawana land

Answer 22

it is the southern half of Pangea when it spit about 200 million years ago

Question 23

what is laurasia

Answer 23

it is the northern half of Pangea when it split about 200 million years ago

Question 24

what is laurasia

Answer 24

it is the half of Pangea when it split about 200 million years ago

Question 25

can you determine what mineral it is by its color why or why not

Answer 25

no as a mineral could be many different colors and be the same mineral

Question 26

what is stratification

Answer 26

it is the arrangement of sedimentary rock

Question 27

what is a surface wave

Answer 27

it is the slowest of the three seismic waves and often does the most damage

Question 28

what is a syncline

Answer 28

it is a down fold of a rock layer in sedimentrey rock

Question 29

what is a subduction zone

Answer 29

A subduction zone is a region of the Earth’s crust where tectonic plates meet. Tectonic plates are massive pieces of the Earth’s crust that interact with each other. The places where these plates meet are called plate boundaries.

Question 30

what is a plate boundary

Answer 30

Earth’s outer layer, the crust, is divided into a set of large moving plates. The lines where they meet are called plate boundaries. There are three main types of plate boundary: divergent, convergent and transform. Plates move away from one another at divergent boundaries.

Question 31

what is the theory of plate tectonics

Answer 31

Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen “plates” that move around across the earth’s surface relative to each other, like slabs of ice on a lake.

Question 32

what is a vent

Answer 32

it is an opening in earths crust