The document defines key terms related to volcanoes: - Cinders are charred bits of rock produced by volcanoes during eruptions. Lava and magma are molten rock found underground and on the surface. - A crater is a bowl-shaped depression often formed by volcanic eruptions. Eruptions can blow off mountain tops and shoot magma out furiously. - The earth's crust is its solid outer layer, on top of which lie tectonic plates. Molten rocks from eruptions can slide down volcanoes. - Terms like billowing, magma, advancing, lava, exploding, crater, erupting and

1. Volcanoes

2. Cinders
 Volcanoes often
produce charred bits
of rocks; ashes
 The volcanoes
cinders coated the
ground.

3. Crater
 A bowl-shaped
depression
 The volcano eruption
created a huge crater.

4. Crust
 The solid outer layer
of earth.
 The plate tectonics lie
on the earth’s crust.

5. Eruption
 A volcanic explosion
or large flow of lava
 The volcano eruption
blew the mountain top
off.

6. Lava
 Hot melted rock that
flows from a volcano
 The lava burned all
the trees in its path

7. Magma
 Hot melted rock
underneath the
earth’s surface
 The magma shot out
of the volcano
furiously.

8. Molten
 Made liquid by heat
 The molten rocks
slide down from the
volcano.

9. Summit
 The top of a mountain
 We climbed all the
way to the summit.

10. Categorize and Classify:
Put these words into categories
 Billowing  Pipe
 Magma  Fissure
 Advancing  Molten
 Lava  Weathering
 Exploding  Collapsing
 Crater  Cinders
 Erupting  Century
 Summit  Extinct

11. Categorize and Classify
Types of
Volcanoes