Tectonics Fact Attack

Question 1

How old is earth?

Answer 1

4.6 billion years

Question 2

What shape is Earth?

Answer 2

Geoid

Question 3

How thick is oceanic crust?

Answer 3

7-20km

Question 4

How thick is continental crust?

Answer 4

70km

Question 5

What type of rock is the oceanic plate made from?

Answer 5

SIMA - Silica and Magnesium

Question 6

What type of rock are continental plates made from?

Answer 6

SIAL - Silica and Aluminium

Question 7

What type of plate is denser?

Answer 7

Oceanic

Question 8

What is the lithosphere?

Answer 8

The crust and upper most part of the mantle

Question 9

What is asthenosphere?

Answer 9

The liquid mantle

Question 10

What layers of earth are liquid?

Answer 10

Mantle and outer core

Question 11

Explain why inner core is solid?

Answer 11

Due to gravitational pressure from the rest of the planet

Question 12

What is the temperature of the inner core?

Answer 12

5000-6000°c

Question 13

Name of super continent?

Answer 13

Pangaea

Question 14

When did Wegner come up with continental drift?

Answer 14

1912

Question 15

Name 4 pieces of evidence that Wegner used?

Answer 15

• Similar fossils in South America and Africa
  -Coal under Antarctica
• Matching striations
• Puzzle fit between continents like South America and Africa

Question 16

When was Harry Hess’ theory?

Answer 16

1962

Question 17

How did Harry Hess prove Wegners theory?

Answer 17

Palaeomagnitism - magnetic N/S pole which switches every 400,000 years making rocks align differntly

Question 18

How does sea floor spreading help prove Wegeners theory?

Answer 18

New land being created proves that plates are moving

Question 19

Name 3 tectonic plates?

Answer 19

Eurasian
North American
Pacific

Question 20

How tall can mid Atlantic ridges be?

Answer 20

4000 metres above sea floor

Question 21

Locate a famous rift valley?

Answer 21

Ethiopia - East African Rift

Question 22

How many countries does the East African Rift stretch through and how long is it?

Answer 22

8 countries
6000km

Question 23

Name 3 examples of fold mountain ranges?

Answer 23

Himalayas
Rockies
Andes

Question 24

Example of oceanic trench?

Answer 24

Mariana Trench

Question 25

When was the Christchurch earthquake and its aftershock?

Answer 25

September 2010 February 2011

Question 26

How many people died in Christchurch quake?

Answer 26

180

Question 27

How long were schools closed for following the Christchurch earthquake?

Answer 27

2 weeks

Question 28

How much international aid was provided for the Christchurch quake?

Answer 28

$6-7 million

Question 29

When was the Indian Ocean Tsunami?

Answer 29

Dec 2004

Question 30

How high did the seabed rise in the Indian Ocean Tsunami?

Answer 30

15m causing 30km waves

Question 31

How many deaths in Indian Ocean Tsunami?

Answer 31

225,000 people

Question 32

How much was the damage from the Indian Ocean Tsunami?

Answer 32

$9.4 billion

Question 33

How much aid provided for Indian Ocean Tsunami?

Answer 33

$14 billion

Question 34

How many blankets did Oxfam provide people with after the Indian Ocean Tsunami?

Answer 34

40,000

Question 35

What does the Centre for Research on the Epidemologu of Disasters (CRED) define a disaster as?

Answer 35

10 people have died 100 people affected