Download Volcanoes Study Guide

Volcanoes Study Guide
1. What region of the Earth has a lot of volcanic
activity?
2. What instruments are used to study and predict
volcanic activity?
3. What causes hot ash clouds to rise high in the sky?
4. What bulbous feature is created when hot magma
erupts onto the cold ocean floor and immediately cools
in the water?
5. Why do volcanic mountains, like Mt. St. Helens, form
where plates collide?
6. What is the difference between magma and lava?
7. Most _________ is made up of fine particles of
volcanic glass that can damage lungs and destroy
engines.
8. Most lava flows along the ________, so the path of
lava can be easily predicted.
9. Most lava ________ are less dangerous than eruptions
of ash.
10.
Why did a bulge form on the north side of Mt.
St. Helens just before it erupted?
11.
Why do earthquakes almost always occur before
a volcano erupts?
12.
Name 3 constructive benefits of volcanic
eruptions.
13.
Name 3 destructive effects of volcanic eruptions.
14.
Of these four liquids, which is the most viscous?
(water, vegetable oil, heavy corn syrup, thin
shampoo)
15.
Illustrate the slopes of a volcano that has runny
lava.
16.
Illustrate the slopes of a volcano that has thick
lava.
17.
Name three volcanoes we have discussed, their
location, and the effects of those volcanoes erupting.
18.
What is the rock cycle?
19.
What are the three types of rocks?
20.
What type of rock is formed underground?
21.
What type of rock changes from one form to
another form?
22.
What type of rock is made up of sediments and
sand?
23.
What is a geyser? Hot spring? Hot spot?