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Volcanoes
Test Description: A 5th and 6th grade review test.
Instructions: Answer all questions to get your test result.
1) What is a volcano?
A
A mountain that only erupts violently
B
A opening in Earth's crust on top of a mountain
C
Any opening in Earth's crust through which hot gases, rocks and melted material erupt
D
A large mountain spewing with red-hot lava
2) High temperatures and pressures in Earth can cause rock to melt...
A
the melted rock is called magma
B
the melted rock is called lava
C
the melted rock is called bombs
D
the melted rock is called volcanicdebris
3) Which tectonic plate is the Ring of Fire located around?
A
Caribbean Plate
B
Pacific Plate
C
Philippine Plate
D
Nazoa Plate
4) Volcanic rocks the size of golf balls, baseballs and softballs are called?
A
Bombs
B
Cinders
C
Magma
D
Big rocks
5) Volcanoes are classified by all of the following except?
A
How often eruptions occur
B
Type of Lava
C
Where they are located
D
The way they erupt
6) What are the three names for volcanoes based on how often eruptions occur?
A
Gentle, explosive and both
B
Intermittent, dormant and extinct
C
Often, little and dead
D
Violent, sticky and fluid
7) What is a cinder-cone volcano?
A
Made of layers of cinders. Forms around a central vent containing magma
B
Formed when explosive eruptions of sticky lava alternate with quieter eruptions of volcanic rock bits
C
Lava flows quickly from a crack in the Earth's crust, has very gentle slopes.
D
A volcano
8) When are island arcs formed?
A
At divergent plate boundaries, the rock layers separate exposing the magma and thus releasing it.
B
Not at a plate boundaries when magma rises to the surface.
C
At transform boundaries, the magma rises because of the pressure and forms a chain of volcanoes.
D
At convergent boundaries when a plate undergoes subduction. The plate melts forming magma. The magma then rises.
9) What measuring devices are placed near the volcano to help predict eruptions?
A
Seismometer and tiltmeter
B
Seismograph and robot
C
Tiltmeter and seismograph
D
Seismometer and seismograph
10) What is a hot spot?
A
Extremely hot places deep within Earth's mantle
B
Extremely hot places in the ocean
C
Extremely hot places in a volcano
D
Extremely hot places in an oven
*select an answer for all questions
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