Chapter 1 - Volcanoes

Question 0

What is Iceland

Answer 0

Iceland is a volcanic island
Mid Atlantic ridge

Several volcanic mountains

Question 1

2010

Answer 1

Volcano erupted disrupting European airlines

Question 2

Benefits of volcanic activity

Answer 2

Hots springs rise from the ground providing hot water for locals

Central heating

After lava cools there’s often fertile land at the hills around the volcano

Heats greenhouses

Question 3

Formation of a volcanic mountain

Answer 3

1. The magma reaches the surface through a narrow VENT
2. It ERUPTS explosively. Lava, boiling mud and ash are hurled through the air
3. Hot LAVA then flows out through the vent. The lava cools and hardens
4. Repeated lava flows build up around the vent to form a CONE SHAPED MOUNTAIN

Question 4

Mt Krafla ???

Answer 4

Has been erupting continuously for 30 years straight

Question 5

Surtsey??

Answer 5

Volcanic island first appeared above the sea in an eruption in 1963

Question 6

Volcanic activity ??

Answer 6

Beneath the earths crust there’s hot liquid rock called MAGMA when plates separate it can force its way through cracks and reach the surface when it does it cools and hardens. It is then called lava

Question 7

Formation of the mid Atlantic ridge

Answer 7

1. The American and Eurasian plates floating on semi molten rock separate because of the moving currents
2. As they move apart a long crack occurs in the earths crust
3. MOLTEN MAGMA from beneath the crust wells up through the crack. The magma cools and hardens to form a ridge beneath the Atlantic Ocean

Question 8

What is the pacific ring of fire

Answer 8

The largest earthquake and volcanic zone

It’s along the edges of the Pacific Ocean

Question 9

What is continental drift???

Answer 9

The earths crust is divided into plates the currents cause the to move and deprecate causing continental drift

Question 10

What is folding

Answer 10

Folding can occur when two plates collide and compression causes parts if the crust to become buckled and raised into mountains

Question 11

Examples of fold mountains

Answer 11

The Rocky Mountains

The Andes

The mountains of Munster

Question 12

What are earthquakes

Answer 12

Earthquakes occur when plates collide or grind past each other this causes shock waves to get sent out from the focus when they reach the surface the ground trembles causing lots of damage

Question 13

Where has suffered awful earthquake damage ??

Answer 13

San Francisco