Plate Tectonics

Question 1

Name all layers of the earth and what they’re made of.

Answer 1

Crust (60km - 70km thick; contains solid rock), mantle (hot molten rock; magma), inner core (solid iron and nickel) & outer core (liquid iron & nickel)

Question 2

What was the supercontinent called?

Answer 2

Pangaea (meaning all land)

Question 3

What is continental drift?

Answer 3

Continental drift is when plates drift apart from eachother.

Question 4

Why do continents move?

Answer 4

Continents move when a new plate is being created (lava erupts in undersea mountains) aka sea floor spreading

Question 5

Name 8 major plates

Answer 5

North American plate, South American plate, nazca plate, pacific plate, Antarctic plate, African plate, Eurasian plate and Indo-Australian plate.

Question 6

What type of plates are the ones that carry land on them and are usually very thick (40km - 70km)?

Answer 6

Continental plate

Question 7

What plate carry oceans on them and are usually thin (6km - 10km)?

Answer 7

Oceanic plate

Question 8

How do plates move, and what is the movement called?

Answer 8

Plates move when the magma in the mantle moves in big circles called convection currents

Question 9

What is a plate boundary?

Answer 9

A plate boundary is where the two edges of plates meet

Question 10

Draw a short diagram of how convection currents work (+label & short paragraph)
Draw 3-4 times

Answer 10

‘Must Have’ Labels: plates, convection currents, mantle, subduction zone, arrows ‹- -› & title

Question 11

Name this plate boundary —› ‹—

Answer 11

Destructive plate boundary, when two plates slowly collide, forming a subduction zone

Question 12

Name this plate boundary ‹— —›

Answer 12

Constructive plate boundary, where two plates move apart, creating lava flow upwards, making new crust

Question 13

Name this plate boundary ‹—
—›

Answer 13

Transformative plate boundary, where two plates slide or grind past each other, sometimes causing earthquakes

Question 14

What happends when a oceanic plate collides with a continental plate

Answer 14

The oceanic crust is dragged downwards where it melts and is recycles into the mantle (subduction)

Question 15

Draw a diagram of plates separating (+labels & short paragraph)
Draw 3-4 times

Answer 15

must have labels: mid-ocean ridge, convection currents, plates (names), arrows ‹- -› & ocean

Question 16

What is a fault line

Answer 16

A fault line is where a visible line is at a transformative plate boundary. (E.g San Andreas fault)

Question 17

What happens when two plates get stuck sliding past each other

Answer 17

When two plates get stuck together, they build up great pressure until they slip, releasing the pressure, causing a very destructive earthquake

Question 18

Draw diagram of 3 plate boundaries (+labels)

Answer 18

Must have Labels: subduction zone, crust, angle, convection currents, arrows ‹- -› & lines pointing to each boundary

Question 19

What happens in a subduction zone

Answer 19

In a subduction zone, the oceanic plate melts and recycles into the mantle

Question 20

What is the largest plate collision zone on earth

Answer 20

The pacific ring of fire

Question 21

What do destructive plate boundaries create

Answer 21

Fold mountains & earthquakes (e.g Himalayas )

Question 22

Draw a diagram of two continental plates colliding (fold mountains)

Answer 22

Must have labels: fold mountains, uplift, arrows ‹- -›, convection currents mantle & earths crust being folded

Question 23

Do the Himalayas form a destructive or constructive plate boundary

Answer 23

Destructive

Question 24

Name the continents and oceans of the world

Answer 24

Asia, Africa, North America, South America, Antarctica, Europe & Australia

Arctic, pacific, Atlantic, southern, Indian,