Transcript Slide 1 - Henrico

Volcanoes can occur at
 Subducting
 Hot
boundaries
Spots
 Any type of climate
Volcanoes
They
 They
 They
 They

make new land
made the oceans
made the air
are deadly
Other features of a volcano are
Geysers
 Hot Springs

Molten rock inside the Earth is
called
Molten rock or magma that
flows on the Earth’s surface is
called
What would be a clue that a
volcano might erupt?
Small earthquakes near the volcano
 A bulge or tilt in the ground near the
volcano

The ash fall from a volcano
Can collapse buildings
 Kill crops and livestock
 Is very costly to clean up
 Damage lungs
 Pollute water sources
 Travels the furthest

Which type of lava is sharp and
chunky?
Which type of lava has a glassy
surface with rounded wrinkles?
What type of lava results from
underwater eruptions?
The largest volcano discovered
anywhere is
A “sleeping” volcano is classified as
A volcano that is currently
erupting is said to be
A volcano that is not expected to
erupt again is said to be
Mt. St. Helens is located in which
state?
Have there ever been active
volcanoes in Virginia?
A rock that is ejected from a
volcano that is about the size of
rice is called
The largest projectiles given off by
a volcanic blast are
Shield volcanoes are
Volcanologists are measuring
amounts of this gas/gases in
hopes of predicting eruptions.
What is the name of the first
national park that was formed
by a volcanic eruption?
The Hawaiian Goddess of Fire is
Sunset Crater is an example of
what type of volcano?
Mt. St. Helens and Mt. Fuji are
examples of what type of
volcano?
The biggest volcanoes are what
type?
This mountain range in the Pacific
Northwest has a lot of volcanos.
The large explosion that occurred
in 79 AD and totally destroyed
Pompeii is which volcano?
California, Oregon, and
Washington are part of the
Black volcanic glass
Has gas bubbles
Vietnam War Memorial is made of
Statues are made of
Most abundant rock on Earth
The holes in some igneous rocks
are caused by escaping
How are igneous rocks formed?
A rock that cools inside the
Earth is classified as
Extrusive igneous rocks
Intrusive rocks
Cool slowly
 Cool inside the Earth
 Large crystals

Extrusive Igneous Rocks
Cool rapidly
 Cool outside the
Earth
 Small or no crystals

Because granite cools below the
surface of the Earth, it is
Some extrusive igneous rocks,
such as obsidian, are glassy
because they
Coarse grained rocks are formed
when
Fine grained rocks are formed
when
What can the cooling rate of
molten rock determine in
igneous rocks?