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Grade 8 Science: 8A / 8B Practice Quiz

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1.
5 points
Volcanoes are made of ______________ rocks.
2.
5 points
Volcanoes are classified by
***Check ALL that apply!***
3.
5 points
A volcano begins to form when magma forces its way to the surface and breaks through, forming a hole or
4.
5 points
Pillow lava forms
5.
5 points
A mudslide caused by a volcano is called a
6.
5 points
Which of these lists is in correct order from smallest to largest?
7.
5 points
Which of the following DOES NOT belong with the other three?
8.
5 points
Which organisms are the base or first step of the food chain around black smokers deep within the world?
9.
5 points
Which of these structure types is the most common for volcanoes?
10.
5 points
A _____________ is a depositional mountain built up by molten rock that has risen to the earth's surface through a vent.
11.
5 points
The depression found at the top of most volcanic cones is called a(n) ___________.
12.
5 points
A(n) _________________ is a vent in the ground through which hot gases escape.
13.
5 points
Flood _________ are thick layers of igneous rock covering large portions of the earth. They are thought to have formed when huge quantities of magma were released through cracks in the earth's crust.
14.
5 points
Volcanoes are classified by
***Check ALL that apply!***
15.
5 points
Where plate _______________ (where one plate slides underneath another) is occurring, great amount of magma are being created, then pushed to the earth's surface due to great amounts of heat and pressure.
16.
5 points
A __________________ is one that has lava and tephra that form layers or strata.
17.
5 points
A pyroclastic flow or "glowing avalanche" contains both gases and hot solid particles.
18.
5 points
The term "tephra" is used to describe lava that has cooled and solidified on the ground.
19.
5 points
Some volcanoes that were considered dormant have erupted with disastrous results.
20.
5 points
The Alpine-Himalayan volcano belt is sometimes called the Ring of Fire.
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