Ash
True or false- All volcanoes are in the shape of a cone.
False - Most people think of volcanoes as large cone shaped mountains but that is just one type, others feature wide plateaus, fissure vents (cracks were lava emerges) and bulging dome shapes.
What is Lava?
Melted rocks
Hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
True or False- Volcanoes only exist on land
False - Many volcanoes exist under the oceans and some of them even become islands!
Magma is another word for...
a. liquid rocks
b. Red fire
c. Lava
C. Lava
True or False - All volcanic eruptions feature rivers of lava.
False
Many volcanoes don't have dramatic lava flows.
How high into the air can a volcanoes eruption send ash?
a. 10 ft.
b. 1 mile
c. 17 miles
d. 27 miles
C. 17 miles
Volcanic eruptions can send ash high into the air, over 17 miles above the Earth’s surface.
Most volcanoes are concentrated around the "ring of fire", which encircles which ocean?
1. Atlantic
2. Pacific
3. Indian
4. Arctic
2. Pacific
The Pacific ocean has more active volcanoes along its shores than any other ocean.
True or False- Jupiter has active volcanoes on its moon, Lo.
True
What country has the most historically active volcanoes?
1. Canada
2. Indonesia
3. Italy
4. United States
2. Indonesia
Indonesia has over 75 active volcanoes within its borders.
What is the tallest Volcano in the world?
Mauna Kea, U.S.
Tambora, Indonesia
Etna, Italy
Kilauea, U.S.
Mauna Kea, in Hawaii is the tallest Volcano in the world.
What volcano is known to be the most violent?
a. Stratovolcanoes
b. Cinder Cone Volcanoes
c. Shield Volcanoes
Stratovolcanoes are considered the most violent.
About how many active volcanoes are there on Earth?
A. 100
B. 600
C. 1,200
D. 1,900
D. 1,900
What is the most common type of volcano?
a. Strato volcanoes
b. Cinder cone volcanoes
c. Shield volcanoes
Cinder cone volcanoes (also called scoria cones) are the most common type of volcano
True or False- Volcanic ash contains minerals that are beneficial to plants.
True
Volcanic ash often contains minerals that are beneficial to plants, and if it is very fine ash it is able to break down quickly and get mixed into the soil.
Where does the word "Volcano" come from?
1. Volume
2. Star Trek
3. The God, Vulcan
4. Italian word for "angry"
The God Vulcan
Worshiped in Rome, Vulcan was thought to live under an island called Vulcano, off the coast of Sicily. The word "volcano" comes from the name of the island.
Which of the following countries has the most volcanoes?
Indonesia
What type of volcano is Mount St. Helens?
A. Stratovolcanoes
B. Shield volcano
C. Cinder Cone volcano
A. Stratovolcanoes
What planet has the largest volcano in the solar system?
Earth
Uranus
Mars
Saturn
Mars has the largest volcano in the solar system.
Which volcano buried the Roman city of Pompeii in A.D. 79?
1. Krakatoa
2. Vesuvius
3. Mount St. Helens
4. Tambora
2. Vesuvius - Mount Vesuvius erupted in August, A.D. 79, after being dormant for almost 2,000 years.
What is the other name for lava rock that is used by salons?
a. Bed rock
b. Pumice
c. Obsidian
d. Granite
d.
Pumice
Pumice is a unique volcanic rock (igneous) that can float in water. It can also be used as an abrasive and is sometimes used in beauty salons for removing dry skin.
True or False - Yellowstone National Park has enough magma to fill the Grand Canyon 11.2 times.
True
In 2015 researchers discovered Yellowstone has even more magma than we thought. Beneath the previously known magma chamber, there’s a second, larger reservoir with enough hot goo to fill the Grand Canyon 11.2 times.
In the last 250 years, what volcano has killed the most people?
a. Mount Saint Helens in the U.S.
b. Asama in Japan
c. Askja in Iceland
d. Tambora in Indonesia
Tambora
in 1815, about 10,000 people were killed in the eruption of Tambora. Famine and disease, caused by the eruption, killed another 80,000 people.
1. Composite, Shield and Dome
2. Cone, Sphere, Dome
3. Pumice, Lava, Magma
1. Composite, Shield and Dome
There are three main types of volcano - composite or strato, shield and dome.
The most common variety of molten rock (lava or magma) above ground or below is called what?
a. selenite
b. quartz
c. basalt
C. Basalt
Lava is magma that has erupted above the planet’s surface. The most common variety of molten rock, either above ground or below, is basalt.
True or False- Volcanoes can create Tsunamis.
True - Large waves may be generated by the sudden displacement of water caused by a volcanic explosion.