Volcanoes

Some fun facts about VOLCANOES

A volcano is a gigant mountain that has magma

volcanoes have 50 eruptions each year

The Earth's crust is made up of 17 slabs called "tectonic plates"

​There are around 1,500 potentially active volcanoes on Earth, with over 500 of them have erupted in recorded history.

the most volatile region where many volcanic eruptions and earthquakes occur is called "The Ring of Fire"

The Ring of Fire is home to 75% of the world's volcanoes

• Shield volcano

• composite volcano​

​There are 2 types of volcanoes:

Wide and broad with lava usually slowly oozing out of them​

Shield volcano

It is more violent when magma reaches the surface

​

Composite Volcano

The speed of a volcanic eruption can reach 100 miles per hour

​

If a volcano is not erupting, but may erupt in the future, it is dormant.

Dormant Volcano

If a volcano is erupting, then it is active.

Active Volcano

If a volcano has not erupted in thousands of years and will not erupt in the future, it is extinct.

Extinct Volcano

​Stages of a Volcano

• A crater is a hole left at the top of a volcano that has erupted.

• The sides of a volcano form the cone at the top.

Multiple Choice

How many active volcanoes does the Earth have?

• 1500

• 2600

• 1600

• 2500

Multiple Choice

How many eruptions does a volcano have each year?

• 70

• 20

• 50

• 80

Multiple Choice

A volcano is a regular mountain

• true

• false

Multiple Choice

The Earth's crust is made up of 27 slabs called tectonic plates

• true

• false

Multiple Choice

How many tectonic plates does the Earth have?

• 27

• 17

• 37

• 47

Multiple Choice

How many volcanoes have erupted in the recorded history?

• 1500

• 1000

• 600

• 500

Open Ended

How is called the most volatile region with a lot of volcanic activity?

Multiple Choice

The Ring of Fire is home to 75% of the world's volcanoes

• true

• false

Multiple Choice

Wide and broad with lava usually slowly oozing out of them

• Shield volcano

• Composite volcano

Multiple Choice

More violent when magma reaches the surface

• Shield Volcano

• Composite Volcano

Multiple Choice

The speed of a volcanic eruption can reach 100 miles per hour

• true

• false