Distribution Of Active Volcanoes

Question 1

tectonic plates underneath the ocean

Answer 1

Oceanic Plates

Question 2

tectonic plates located underneath the continents

Answer 2

Continental Plates

Question 3

The Continental Plates are:

Answer 3

African

Antartic

Indo-Australian

Eurasian

North American

South American

Question 4

The Pacific Plate covering the Pacific Ocean is an ??

Answer 4

oceanic plate

Other secondary plates are oceanic

Question 5

-are most likely found either on or near plate boundaries

-are situated along the boundaries of major plates where the denser and heavier oceanic plates slide under the continental plates.

Answer 5

Volcanoes

Question 6

• the boundaries between the Pacific Plate and the continental plates around it
• an area where a large number of volcanic eruptions and earthquakes occur;
• contains 450 volcanoes, 75% of which are active
• also called the Circum-Pacific Belt or the Pacific Ring of Fire

Answer 6

Ring of Fire

Question 7

places within the mantle where rocks melt to generate magma

When a hot spot forms in the middle of a plate, it remains steady as a plate continues to slide over it.

As the tectonic plate moves over the stationary hot spot, old volcanoes drift away and new ones are formed in their place.

A hot spot develops above the plume.

Answer 7

Hot spots

Question 8

rises through the cracks and erupts to form active volcanoes

Answer 8

Magma

Question 9

areas of hot, upwelling mantle.

e.g. Hawaiian Islands

Answer 9

Mantle plumes

Question 10

Earth’s active volcanoes are located in specific areas including:

Answer 10

1. Around the edge of the Pacific Ocean
2. Down the center of the Atlantic Ocean
3. In Southern Europe
4. Down the east coast of Africa

Question 11

The reason for the distribution of volcanoes is ??

Answer 11

It is located on or near the tectonic plate boundaries.