Science 2017 semester 2

Question 1

What are the 4 layers of the Earth (in to out)

Answer 1

Inner core, outer core, mantle, crust

Question 2

Crust size

Answer 2

-20-60km

Question 3

Mantle size

Answer 3

2,900km

Question 4

Inner core about it

Size

Answer 4

1300km

Question 5

Outer core size

Answer 5

1110km

Question 6

Three types of plate boundary’s

Answer 6

Convergent
Transform
Divergent

Question 7

Theory’s of the supercontinent

Answer 7

Jigsaw
Fossil
Similar rock layers

Question 8

About the supercontinent

Answer 8

Alfred Wegener first proposed the theory and he called it Pamela

Question 9

Two tectonic plates

Answer 9

Continental

Oceanic

Question 10

What is a convection current

Answer 10

It’s is a current in a fluid that results from convection

Convection current is located in the mantle

Question 11

Continental-Continental convergent form?

Example

Answer 11

Forms mountain

Example Andes

Question 12

Continental-oceanic convergent forms

Answer 12

When Continental crust pushes against oceanic crust is a subduction zone which creates volcanoes
Example- Andes

Question 13

Oceanic oceanic convergent forms

Answer 13

Creates trenches

Example- Mariana Trench

Question 14

Continental continental divergent forms and an example

Answer 14

Creates rifts or rift valleys

Example Iceland

Question 15

Oceanic oceanic divergent forms

Answer 15

Mid ocean ridge is formed

Where the sea floor is separating and new oceanic crust is made

Question 16

Wegener’s then theory states that all the continents were originally together, when the southern and northern hemisphere continents broke apart what was the name given to the large group of Southern Hemisphere continents?

Answer 16

Gondwana land

Question 17

Wegener’s then theory states that all the continents were originally together, when the southern and northern hemisphere continents broke apart what was the name given to the smaller group of northern Hemisphere continents?

Answer 17

Laurasia land

Question 18

Which type of plate boundary causes a sea floor spreading? Explain how this is the case?

Answer 18

Oceanic oceanic divergent cause sea floor spreading . When the sea floor does spread it creates new oceanic crust

Question 19

What scale is used to measure the magnitude of an earthquake

Answer 19

Richer scale

Question 20

What is the name given to someone who studies earthquakes

Answer 20

Seismologists

Question 21

What are the two types of waves produced by earthquakes

Answer 21

Primary waves (p-waves) 
Secondary waves(s-waves)

Question 22

List characteristics about the primary waves?

Answer 22

Fastest
Make objects and building vibrate vertically
Travel through solids and liquids

Question 23

List characteristics about the secondary waves?

Answer 23

Slowest
Make objects move horizontally
Travel through only solids

Question 24

3 main element that make up the earths crust

Answer 24

Silicon
Aluminium
Oxygen

Question 25

What is the mantle made up of

Answer 25

It is made up of liquid rock

Question 26

What is the inner core made up of

Answer 26

Iron and nickel

Question 27

What is the outer core made up of

Answer 27

Iron and nickel

Question 28

Is the inner core a solid or a liquid

Answer 28

Solid

Question 29

Is the outer core a solid or a liquid

Answer 29

Liquid

Question 30

Which layer does the convection current occurs in

Answer 30

Mantle

Question 31

Which of one of the continental or oceanic plate is more dense

Answer 31

Oceanic

Question 32

What is a subduction zone

Answer 32

A subduction zone is where one plate slides under (oceanic )the other (continental). This creates a volcano

Question 33

What is the difference between magma and lava

Answer 33

Magma is in the volcano and lava is outside the volcano