Rocks
Rock Cycle
Predicting Eruptions
Dangerous Volcanoes
Mixed Bag
100
This is molten rock found below the earth's surface.
What is magma?
100
When metamorphic and igneous rocks become melted they turn into__________
What is magma?
100
Explain why some volcanoes are not monitored as much as other volcanoes.
Some volcanoes are hard to get to, some volcanoes are extinct/dormant so they are not monitored, some volcanoes are not as explosive as others....
100
If a volcano has not erupted for 10,000 years it is called ___________________.
Dormant
100
COSPEC stands for correlated spectrometer. What does it measure?
Gas levels in a volcano
200
Which type of rock is formed through heat and pressure?
What is metamorphic rock?
200
_________ and ____________ turn sedimentary rocks into metamorphic rocks.
Heat and pressure
200
What does a seismometer measure?
Number and size of earthquakes
200
More explosive volcanoes have _____________ lava and ________________ gas content.
High viscosity, high
200
Where can a lot of igneous rock be found?
Near Volcanos
300
Sediment is formed from what?
Weathering & Erosion- rocks that have broken down
300
When igneous, metamorphic and sedimentary rocks go under weathering and eroding they become_________________
What is sediments?
300
Name two devices that can be used to measure volcano activity.
Seismometer, gps receiver, thermocouple, and cospec (multigas)
300
Which type of volcano is the most dangerous?
Plinian eruptions or stratovolcanoes
300
Location A has sedimentary rock. Location B has igneous rock. Which location is safer to build in?
Location A - igneous rocks indicate volcanic activity
400
Which types of rock are formed through energy from Earth's Core?
Igneous and Metamorphic
400
Metamorphic rocks are typically found inside the crust. Why is this?
Because metamorphic rocks must be exposed to high amount of pressure to form. The plates have to squish the rock when they move to create a metamorphic rock.
400
Volcano A: Gas Level 210, Earthquakes: 14
Volcano B: Gas Level 390, Earthquakes: 80
Volcano C: Gas Level 415, Earthquakes: 5
Which volcano is most likely to erupt?
Volcano B because more than one measurement is high.
400
Which warning level would you assign this volcano based on the data?
Normal or Advisory (Level 1 or 2)
400
_____________ is breaking down rock, while ____________ is moving rock.
weathering and erosion (in order)
500
Sedimentary rocks are formed with energy from the Sun, weathering, erosion, ___________, and ________________.
Compaction and Cementation
500
All rocks can turn into all other types of rock because of __________________.
Energy (Energy from the Sun & Energy from the Earth's Core)
500
There are usually several years between volcano eruptions. Why?
The magma chamber has to refill as the plate moves and is melted.
500
Volcano 1 has a VEI of 3. Volcano 2 has a VEI of 5. Which volcano is more likely to be dangerous and WHY?
Volcano 2 because it is more explosive.
500
At a convergent plate boundary, one plate sink below the other plate. This is called _____________.
Subduction