Evrything

Question 1

What is the crust crust?

Answer 1

This is the thinnest layer of the earth

• It contains rocks and minerals.
Under the oceans, the crust is
mainly basalt but under the continants it is granite

Question 2

What is the mantle?

Answer 2

This is the thickest layer of the
Earth
• It moves in slow, big circles
caused by Convection Currents

Question 3

What is the. Outer core?

Answer 3

Semi liquid iron

Question 4

What is the epicentre of an earthquake?

Answer 4

The point on the Earth surface directly above the focus of the earthquake

Question 5

What is the focus?

Answer 5

The point in the earths crust were the earthquake happens

Question 6

What is the Richter scale?

Answer 6

It measures the magnitude of an earthquake by measuring the tremors using a seismo graph. The scale is 1 to 10

Question 7

What is the mercalli scale?

Answer 7

This measures the total destruction or impact caused by an earthquake. It doesn’t measure the strength. It uses descriptive damage phrases to illustrate the tremors. This scale goes from 1 to 12.

Question 8

Define primary effect

Answer 8

Something that happens in the short term by the earthquake

Question 9

What is the secondary effect?

Answer 9

It is something happening in a long-term as a result of a primary effect

Question 10

Define volcanoes

Answer 10

They are openings or cracks in the lithosphere where magma from inside the Earth can escape into the surface

Question 11

Define active volcanoes

Answer 11

Liable to erupt example mount Aetna

Question 12

Define extinct volcano

Answer 12

A volcano which has not erupted for many thousands or millions of years

Question 13

Define dormant volcano

Answer 13

A volcano which has not erupted for many years

Question 14

Define super volcano

Answer 14

Volcano 1000 times bigger than a regular volcano has the potential to produce an eruption with major effects on the global climate plus Ecos

Question 15

What is the subduction zone?

Answer 15

where one plate is forced downwards below another plate and
grinds past it causing huge amounts of friction and heat.

Question 16

What is the oceanic crust?

Answer 16

plate that is made up of more dense rock. It sinks easily due to its
density and is constantly created at boundaries. It is ‘young/new
rock’ and forms our ocean bed.

Question 17

What is the destructive plate boundary?

Answer 17

where two plates are moving towards each other, one of which is
continental crust and one is made of oceanic crust

Question 18

What is the continental crust

Answer 18

this is a plate that is made up of less dense rock. Because it is less
dense it doesn’t sink. It is exceptionally old and makes up our land
surfaces

Question 19

What is a boundary?

Answer 19

where two very large crustal plates meet on the earth’s surface.
Earthquakes and volcanoes happen here.

Question 20

What are fold mountains

Answer 20

are large mountain ranges formed by the collision and ‘folding’
of two continental plates as they plates continually push into one another.

Question 21

What is an oceanoc trench

Answer 21

a particularly deep point of the ocean bed where the oceanic and
continental crust have dragged each other downwards.

Question 22

Two plates move __________ each other as a result of __________
___________.
• The ________________ plate is more dense than the _______________ plate,
as a result the oceanic plate sinks below.
• Huge amounts of ____________ occurs at the subduction zone. Plates get
jammed together and suddenly they are released, causing an __________.
• The friction causes ____________ of the oceanic plate in the mantle. The
extra molten rock rises upwards.
• The molten rock is very _________ (like treacle) and often gets _________ in
the volcano underground.
• Eventually the pressure rises and a ____________ eruption takes place.

Answer 22

Towards,convectioncurrents,comtinental,oceanic,pressure,earthquake,melting,rhick,stuck,violent

Question 23

Which layer is the thickest

Answer 23

Mantle

Question 24

Which layer of the earth is hottest

Answer 24

Inner core

Question 25

Which layer of the earth is broken up in tectonics

Answer 25

Crust

Question 26

Is the inner core of the earth liquid

Answer 26

False

Question 27

Which theory did Alfred Wegenerr have

Answer 27

Jigsaw fit

Question 28

Volcanoes only happen at divergent playe boundaries

Answer 28

False

Question 29

What will happen at a divergent (constructive) plate boundaries

Answer 29

Shield volcanoes
Earthquakes

Question 30

What will happen at a conse vative (transfo m) plate bounda y?

Answer 30

Earthwuakes

Question 31

What will happen at a convergent collision bounda y?

Answer 31

Fold mountains
Earthquakes

Question 32

We use different scales to measure ea thquakes. Which scale only measures magnitude?

Answer 32

Richter scale

Question 33

Which plate bounda y is the island of Montse rat on?

Answer 33

Convergant destructive

Question 34

Which of these desc ibes a pyroclastic flow?

Answer 34

fast-moving cu rents of hot gas and rock

Question 35

Which of these desc ibes a lahar?

Answer 35

violent type of mudflow or deb is flow

Question 36

Tsunamis are a seconda y hazard. What t iggered the 2004 Indian Ocean tsunami?

Answer 36

Umderwater earthquake

Question 37

Which of these is a good method of seismic proofing?

Answer 37

Cross bracing