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Volcanoes

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1.
1 point
Find the area of a triangle with a base of 40cm and a height of 10cm. Area = 1/2base x height
2.
2 points
A funnel-shaped pit around a volcanoes central vent is called a ____________.
3.
1 point
what is the area of a rectangle that has a width of 4cm and a length of 8cm?
4.
2 points
Molten rock that is below the ground is called __________.
5.
2 points
An opening in the Earth's crust where lava comes out is called a ___________.
6.
2 points
Molten rock that is above the ground is called __________
7.
2 points
______________ volcanoes have steep sides and narrow bases.
8.
2 points
Volcanic eruptions can happen on....
9.
2 points
Molten rock can be blown out of a volcano in dust sized particles called __________
10.
2 points
This type of volcanoe is built from nonexplosive eruptions and is lower to the ground than the other two types.
11.
2 points
The viscosity of lava tells how thick it is.
12.
2 points
The word composite means:
13.
2 points
When the magma chamber collapses it can form a __________.
14.
2 points
Water in magma can cause an ____________ eruption.
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