Natural Hazards

Question 1

What is a Natural Hazard

Answer 1

An event not caused by men to people. E.g. Volcanic eruption, earthquake, landslide

Question 2

Examples of Natural Hazards

Answer 2

Tsunami
Volcanic Eruptions (Ashfall)
Landslide
Flood
Hurricane
Tornado

Question 3

What is a natural disaster

Answer 3

Occurs when the hazard has a huge impact on people and is too serious for the community of affected to cope with on their own

Question 4

What is the Crust

Answer 4

A solid layer of rock on the surface

Question 5

What is the Mantle

Answer 5

A semi molten layer of rock. Contains some molten liquid rock called magma

Question 6

What is the outer core

Answer 6

The liquid part of the core which was a similar composition to the inner core

Question 7

What is the inner core

Answer 7

The solid part of the centre of the earth it is made of iron and nickel and has temps reaching 5500 degrees

Question 8

What are plate tectonics

Answer 8

The earths crust is divided into a number of large sections called plates. Those plates fit together like a jigsaw. Some plates are mainly the crust on which the land sits which are known as continental plates. Other places are mainly the crust known as oceanic plates. Very slowly the plates are moving because of convection currents.

The convection currents cause plates to move toward each other. The plate boundaries where you find the majority of the worlds earthquakes and volcanoes

Question 9

What happens when two plates move together diagram

Answer 9

1. Oceanic plate
2. Continental Plate
3. Oceanic plate bends down into mantle, this is subduction
4. Plate is unable to withstand stress may break
5. Plant directly above the break is known as epicentre
6. A huge amount amount of energy
7. When magma reaches the surface it fuels a volcanic eruption
8. Convection Current
9. Mantle
10. The continental plate buckles up to form fold mountains
11. Ocean + rench

Question 10

A volcano is

Answer 10

An opening in the earths crust that allows magma, hot ash and gases to escape

Question 11

A volcanic eruption is created when

Answer 11

magma reaches the earths surface

Question 12

Active meaning volcano

Answer 12

Erupts frequently

Question 13

Dormant meaning volcano

Answer 13

The volcano is not erupting but should erupt again

Question 14

Extinct meaning volcano

Answer 14

The volcano is not expected to erupt again

Question 15

Magma Chamber Volcano

Answer 15

Reservoir underground where magma is stored

Question 16

Vent meaning volcano

Answer 16

An opening in the earths crust where molten lava and gases escape

Question 17

Crater meaning volcano

Answer 17

Bowl shaped hollow produced by volcanic

Question 18

Secondary vent volcano

Answer 18

A smaller vent coming out the side of the volcano

Question 19

Lava flow volcano meaning

Answer 19

Magma that has reached the surface and flows over land

Question 20

Volcanic bombs meaning

Answer 20

Fragments of magma ejected into the air during eruption

Question 21

Ash cloud meaning

Answer 21

Tiny particles blasted into the air by volcanic eruptions may form this

Question 22

Steam and gas

Answer 22

Released out a vent or crater may be harmful to atmosphere

Question 23

Main types of media

Answer 23

TV
Radio
News
Newspaper
Social Media
Movies

Question 24

Bias means

Answer 24

means that a person prefers an idea and possibly does not give equal chance
to a different idea i.e. opinions take over from facts. The person’s opinions will then
influence how they report a story, especially if they wish to persuade people to their
point of view. This means that one story may be reported quite differently in various
newspapers.

Question 25

When was the major Tokyo earthquake and state
Depth:
Magnitude:
Number recorder in the year after quake (aftershocks):
How did it happen:

Answer 25

2011
Depth:18.6 miles
Magnitude: 9.0
Number recorder in the year after quake (aftershocks): 900
How did it happen: Thrust faulting on the subduction zone plate boundary between pacific and north America