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Volcanoes

Total questions: 12

Worksheet time: 36mins

Name
Class
Date
1.

The Earth's crust is broken into pieces called

a)

glass

b)

rocks

c)

plates

d)

lava

2.

Melted rock inside the Earth is called

a)

magma.

b)

water.

c)

fire.

d)

surface.

3.

When magma flows out of the volcano it is called

a)

air

b)

water

c)

egg shells

d)

lava

4.

If lots of lava flows out in one spot on the surface of the Earth it forms a mountain and is called

a)

magma.

b)

an ocean.

c)

a volcano.

d)

a ring.

5.

As magma rises towards the surface it collects in a 'pocket' called a _____ _____ .

a)

magma chamber

b)

side vent

c)

main vent

d)

lava chamber

6.
What is letter B in the picture?
a)
Magma Chamber
b)
Crater
c)
Vent
d)
Conduit
7.
What is letter D in the picture?
a)
Crater
b)
Vent
c)
Conduit
d)
Tephra
8.

What is letter A in the picture?

a)

Magma Chamber

b)

Crater

c)

Pipe

d)

Conduit

9.

__________ volcanoes are usually small with steep sides. They are formed from layers of ash and cinders that are ejected into the air and fall back down onto the volcano.

a)

Shield

b)

Cinder Cone

c)

Dormant

d)

Extinct

10.

__________ volcanoes are broad and gently sloped. Their eruptions consist of hot, flowing basaltic lava that tracels a long way before it solidifies.

a)

Cone

b)

Composite

c)

Angel

d)

Shield

11.

____________ volcanoes are tall with steep sides that are built up from layers of viscous lava, ash, and volcanic bombs

a)

Composite

b)

Shield

c)

Cinder Cone

d)

Dormant

12.

True or False: In a quiet eruption, lava erupts in a stream of low-viscosity lava called a lava flow.

a)

True

b)

False