Year 9 Exams

Question 1

Convergent plate boundary

Answer 1

2 plates that meet one slides under the other this is called subduction

Question 2

Divergent plate boundaries

Answer 2

2 plates that are moving away from each other

Question 3

Conservative plate boundaries

Answer 3

Rising magma causes plates to slide closer or away from each other (no crust is destroyed or created)

Question 4

How do tectonic plates move?

Answer 4

CONVECTION CURRENTS causes the crust (plates) to collide, slide or be pulled apart leading to earthquakes and volcanoes.

Question 5

What is a tsunami?

Answer 5

Oceanic waves caused by under sea earthquakes and volcanic eruptions that can travel up to 900kmph

Question 6

How are volcanoes formed?

Answer 6

They are formed where molten rock from the magma chamber erupts onto the surface through a vent. And the magma solidifies to form rock

Question 7

Pangea

Answer 7

The earth before continental drift occured a big landmass

Question 8

Continental drift

Answer 8

The continents drifting apart due to movement in the tectonic plates

Question 9

Who first discovered contintal drift and what evidence did they show?

Answer 9

Alfred wegener, Africa looked like it fit lick a jigsaw to south america

Question 10

Primary hazard

Answer 10

An impact that occurs immediately after an event

Question 11

Secondary hazard

Answer 11

An impact that happens days or weeks after an event

Question 12

Primary hazard of a volcano:

Answer 12

Pyroclastic flow, volcanic bombs, acid rain

Question 13

Secondary hazards of a volcano

Answer 13

Mudflows, landlides, food and water shortages, disease, acid rain

Question 14

Where is china?

Answer 14

Northen hemisphere, eastern asia, south of Russia, north east of India, north west of Pacific ocean, Bejing is the capital

Question 15

Gdp

Answer 15

Total amount of money earned by a country

Question 16

Gdp per capita

Answer 16

Total number of money earned by a country divided by the amount of people that live there

Question 17

What was the urban population of china in 1975?

Answer 17

150 million

Question 18

What is the urban population of china currently

Answer 18

750 million

Question 19

What is happening to rural population currently

Answer 19

It is decreasing

Question 20

What is happening to China

Answer 20

It is experiencing urbanisation

Question 21

What is the ring of fire?

Answer 21

An arc of geological destruction surrounding the pacific ocean

Question 22

What percentage of the worlds volcanoes occur along the ring of fire

Answer 22

75 percent

Question 23

What percentage of the worlds earthquakes occur along the ring of fire

Answer 23

90 percent

Question 24

Name 3 countries that border the ring of fire

Answer 24

Japan, chile, mexico

Question 25

What is viscosity

Answer 25

The more silica there is the harder it is to be runny

Question 26

What is silica

Answer 26

It changes a volcanoes eruptiom

Question 27

Date of the boxing day tsunami?

Answer 27

26th december 2004- 8AM

Question 28

Location of the boxing day tsunami

Answer 28

northen sumatra ,Indian ocean and indonesia

Question 29

Number of deaths caused by the boxing day tsunami

Answer 29

230,000 deaths

Question 30

Magnitude of the boxing day earthquake

Answer 30

9.3MW

Question 31

Why did the boxing day tsunami occur

Answer 31

A large earthquake occured under the indian ocean

Question 32

What type of plate boundary did the earthquake occur on

Answer 32

Convergent

Question 33

What were the names of the plates involved

Answer 33

Indo australian sunducts beneath the eurasion plate

Question 34

Name some economic impacts

Answer 34

14 billion dollars worth of damage, ports ruined, fishing industry devestated, loss from lak of tourism, many of the countries affected are emerging, forests were removed for tourism therefore there was less natural protection

Question 35

Name some environmental impacts of the tsunami

Answer 35

Crops destroyed, farm land ruined by salt water, 8 million litres of oil escaped from oil plants, forests along the coast were destroyed, coral reefs and wetlands damaged.

Question 36

Name some social impacts of the tsunami

Answer 36

1.7million people were made homeless, 5-6 million people needed emergency aid,threat of disease due to sewage and salt water and fresh water mixing, 1500 vilages destroyed in northen sumatra, foreign visitors dropped 80% in phuket (thailand) in 2005, 60& of sri lankas fishing fleet were destroyed.