Volcanoes Flashcards
1
Q
What plate boundaries do volcanoes form at?
A
Constructive and destructive
2
Q
How is a volcano usually formed?
A
When the is a gap in the earth’s crust where magma can rise through.
3
Q
What is an active volcano?
A
Has erupted recently and will again
4
Q
What is a dormant volcano?
A
Hasn’t erupted in 10,000 years but will again
5
Q
What is an extinct volcano?
A
Will never erupt again
6
Q
What are the 5 types of volcanoes?
A
Composite, Shield, Fissure, Caldera and Hotspot
7
Q
What are characteristics of composite volcanoes?
A
- Very explosive
- Cone shape
- Layers of lava and ash
- Lava is vicious (thick)
8
Q
What are characteristics of shield volcanoes?
A
- Not vicious
- Magma is more fluid
- Runny lava
9
Q
What is the place with the most volcanoes called?
A
The Ring of Fire
10
Q
What are positives of living near a volcano?
A
- Great for tourism
- Cheaper
- Rich fertile soils
- Spiritual connections
11
Q
What are negatives of living near a volcano?
A
- Earthquakes
- Ash clouds
- Destruction of roads
- Risk of being homeless
12
Q
What are volcanic hazards?
A
- Tephra
- Lahars
- Lava
- Pyroclastic flows
