Volcanos 🍑🌿🌞🔥✨🐥

Question 1

Where does a volcano develop ? 🌿

Answer 1

From an opening in the Earths surface

Question 2

When it erupts what escapes ? 🌋

Answer 2

Molten rock ( magma ) in a burst of speed 🌋

Question 3

What is a volcano ? 🌋

Answer 3

A natural hazard that can be very destructive but also create new land 🌿

Question 4

What can a volcano send into the atmosphere ?

Answer 4

~ poisonous gases

~ millions of tonnes of dust

Question 5

What does it cover land with ?

Answer 5

• molten lava

- hot ash

Question 6

What dies hot ash do ?

Answer 6

Kills Plants + animals and destroys settlements

Question 7

What is an extinct volcano ?

Answer 7

When a volcano is no longer active

Question 8

What is a dormant volcano ?

Answer 8

A volcano that is still active but hasn’t erupted in a very long time

Question 9

Where is the largest volcano found ?

Answer 9

Pacific Ocean

Question 10

What is the earth ?

Answer 10

A huge fiery ball of hot molten rock, surrounded by a thin layer if cool, hard rock

Question 11

List the primary hazards of a volcano

Answer 11

: ash and dust
: lava flows
: Thephra
: volcanic gases

Question 12

Secondary hazards

Answer 12

; mudflows
; tsunamis
; landslides
; debris avalanches

Question 13

Other hazards ?

Answer 13

Affect in climate

Risk of aircraft due to dust cloud

Question 14

Name the three types of volcanos

Answer 14

Rift volcano
Subductive volcano
Hot spot volcano

Question 15

What 2 gases are let into the atmosphere ( volcanic gases )

Answer 15

Carbon monoxide , sulphur dioxide

Question 16

How do volcanologists predict eruptions ?

Answer 16

Tremors
Earthquakes
Energy waves to work out how close magma is to the surface
Gases in the air change
The amounts of volcanic gases increase
Temperature of stagnant water gets warmer
Magma causes a bulge in the side of volcano
Movement in the ground changes shape of volcano

Question 17

Why do scientists look at past eruptions ?

Answer 17

To see where the most severe lava flows, mudflows , and floods might be expected

Question 18

How are earth tremors caused ?

Answer 18

Movement of tectonic plates

Question 19

What is an earthquake measured on ?

Answer 19

A Richter scale

Question 20

What does the Richter scale calculate ?

Answer 20

The energy released by an earthquake to determine its magnitude

Question 21

How is it measured ?

Answer 21

2 is 10 times more powerful than 1 etc

Question 22

Which cause v little damage and which cause a lot ?

Answer 22

Little - 5 or less

Lot - 7 and above

Question 23

What is another way an earthquake can be measured ?

Answer 23

On the mercalli scale

Question 24

How is the mercalli scale measured ?

Answer 24

(1) - small shudders

(12) - total destruction

Question 25

How are buildings able to withstand earthquakes ?

Answer 25

> stronger reinforced foundations > restricting their height > wide roads between building - prevent fires > gas and water pipes + electric cables are well protected

Question 26

Give examples of extreme weather

Answer 26

``` Hurricanes Tornadoes Droughts Floods Freezing temp. ```

Question 27

What is a tropical storm ?

Answer 27

Low pressured weather system where the centre is warmer than the surrounding atmosphere

Question 28

Where do hurricanes develop and where do they lose force ?

Answer 28

Warm seas, lose force over land

Question 29

What must a storm have to be classified as a hurricane ?

Answer 29

Wind speed - 120km/h

Question 30

How long does it take for hurricanes to form

Answer 30

Over a few days // 6 - 12 hours

Question 31

When do they form ?

Answer 31

When the air over the warm sea in the tropics expands and rises

Question 32

What part of a hurricane is the calmest ?

Answer 32

The eye 👁

Question 33

What do hurricanes pick up ?

Answer 33

Huge amounts of water

Question 34

What is a hurricane accompanied by ?

Answer 34

Heavy rain and lightning

Question 35

What happens in a hurricane ?

Answer 35

Rain wind and waves cause a lot of damage Strong winds cause the most damage Huge waves kill most people Centre - pressure is low you get a swell of water 3 m high

Question 36

What is a tornado ?

Answer 36

Violent spinning column of air that stretches from a base of a thunderstorm to the ground

Question 37

Where do they form ?

Answer 37

Over land where it's warm, moist air near the ground and cool dry air above it

Question 38

What is a tornado measured on ?

Answer 38

Fujita scale

Question 39

What happens in winter storms

Answer 39

Rain snow and hail

Question 40

What is the worst type of winter storm ?

Answer 40

Blizzard ( snow storm )