Volcanoes

Question 1

Name the parts of a volcano

Answer 1

ash cloud,
crater,
cone,
secondary cone,
layers of hardened rock and ash,
steam,
side vent,
lava flow,
volcanic bombs,
main vent,
magma chamber

Question 2

3 stages of volcanoes

Answer 2

Active,
Dormant,
Extinct

Question 3

Explain extinct volcanoes

Answer 3

Volcanoes that are no longer active, erupted thousands of years ago with little possible chance of erupting again

Question 4

Explain dormant volcanoes

Answer 4

Ones that have not erupted recently yet may erupt in the future

Question 5

Explain active volcanoes

Answer 5

Ones that have erupted recently with a chance of erupting again

Question 6

Name the three types of volcanic eruptions (this time its the material that surfaces and the shape they form)

Answer 6

C - composite
C - cinder cone
S - shield

Question 7

Describe composite eruptions

Answer 7

These produce stiff rapidly solidifying lava forming a steep cone

Question 8

Describe cinder cone eruptions

Answer 8

Throws out ash to build up a flatter dome called a cinder cone

Question 9

Describe a shield eruption

Answer 9

One that has lava flowing over the crater rim to form a broad, low “dome”

Question 10

Hazards of a volcanic eruption

Answer 10

Ash
Noise
Lava
Volcanic bombs
Pyroclastic flow

Question 11

What is the volcanic explosivity index

Answer 11

index that measures how much material has erupted from the volcano