Volcanos

Question 1

Volcano comes from the word ____ which is an island which originated its name from _____ the _____.

Answer 1

1. Vulcano
2. Vulcan
3. The roman god of fire

Question 2

Saint Helens is located in______ where she was believed to be placed to ___________ from battling brothers: _________ and _________.

Answer 2

1. Washington State
2. Protect the bridge of the gods
3. Mount Adams
4. Mount Hood

Question 3

Layers of the Earth: ______, _______, _______, ________. Which layers are solid or liquid?

Answer 3

Inner core (solid), outer core (liquid), mantle (semi-molten) and crust (mostly solid).

Question 4

Magma consists of: _______ , _________, _________, _________.

Answer 4

1. Liquified rocks
2. Crystallized minerals
3. Solid rock pulled into the Melt
4. Dissolved gases including water vapour

Question 5

Diameter of the Earth?

Answer 5

12740 km

Question 6

What makes up the lithosphere?

Answer 6

Upper mantle and crust

Question 7

The ocean crust is _____ but _______ than the continental crust.

Answer 7

Thinner but denser

Question 8

4 spheres of the Earth and what is the lowest region of the atmosphere?

Answer 8

1. Lithosphere (geosphere)
2. Hydrosphere ( all water on Earth)
3. Atmosphere ( held together by gravity and the lowest region is called the troposphere
4. Biosphere (all living organisms)

Question 9

How many major and minor tectonic plates are there and name each one

Answer 9

7 major and 8 minor
Major: North American plate, South American plate, Eurasian Plate, Australia plate, African Plate, Antarctic Plate, Pacific plate
Minor: Juan de fuca plate, cocos plate, Indian plate, scotia plate, Arabian plate, Philippine sea plate, Caribbean plate, Nazca plate

Question 10

What is the asthenosphere and how does it move?

Answer 10

The molten layer of the mantle that the tectonic plates sit on. It moves due to the heat transfer and the rise and fall of the molten rocks within it.

Question 11

What is a divergent, convergent and transform plate?

Answer 11

Divergent: pulling apart
Convergent: colliding
Transform: sliding or rubbing

Question 12

Divergent plates are located mainly under the ______.
_______ are mainly formed from divergent plates.

Answer 12

Ocean
Volcanos

Question 13

_______plates create mid-ocean___________ which are formed into long narrow parts

Answer 13

Divergent
Ridges

Question 14

___% of all volcanos are located under the ocean along the _____ which is made up of _______Km of volcanos known as the _________.

Answer 14

70%
Ridge
60,000Km
Ring of fire

Question 15

The area below two convergent plates is called the _____________

Answer 15

Subduction zone

Question 16

Magma becomes _____ when it goes into the subduction zone because there is more ______

Answer 16

Viscous/ thicker
Silica/ silicon dioxide / SiO2

Question 17

Cone-shaped volcanos (__________) are formed because the lava flows less _______

Answer 17

Stratovolcano
Easily

Question 18

Stratovolcanos: ___________,__________, __________, ____________, __________

Answer 18

Mount Tambora (Indonesia), Mount Fuji (japan), Mount Saint Helens (USA), Mount Vesuvius (Italy), Mayon (Philippines)

Question 19

Transform plate: ________

Answer 19

San Andreas Fault

Question 20

Eruptions mainly release the following gases: ___, ___, ___.

Answer 20

CO2, H2O, SO2

Question 21

_______ _______ consists of very hot magma that originated in the core- mantle boundary

Answer 21

Mantle Plume

Question 22

Mantle plume results in: magma ______ beneath the surface creating ____.

Answer 22

Solidifies
Volcanic rock

Question 23

__________ are fed by a pool of magma below the surface.
__________ creates a chain of volcanoes because the _______ _________ moves and the __________________ does not.

Answer 23

Mantle plume
Mantle plume
Tectonic plates
Mantle plume

Question 24

Volcanoes contains less ______ are less violent because they contain less ______. There is no __________ _________ for shield volcanos

Answer 24

Silica
Gases
Subduction zone

Question 25

Shield volcanoes are________ violent than strato volcanos

Answer 25

Less

Question 26

Shield volcanos: _________, ________ , ___________

Answer 26

Mount Terror, Piton de la Fournaise, Mount Karthala

Question 27

Subduction zone contain high levels of _______ and ________ from melted mantle rock

Answer 27

Silica and aluminum

Question 28

Definition of viscosity

Answer 28

Resistance of a fluid to flow, gummy, sticky or thick liquid.

Question 29

Magma from shield volcanos are rich in _______ and ________ and does not contain much ________.

Answer 29

Iron Magnesium Silica

Question 30

Lava solidifies, forming _______ rock. _______ makes up the majority of the ocean floor

Answer 30

Basaltic

Question 31

Shield volcanos are ______ shaped, named after the ________ ______ _______. It has a _______ slope and consists of many layers of lava.

Answer 31

Dome Ancient Greek shield Gradual

Question 32

What is a caldera and how does it occur?

Answer 32

Hole in a volcano that occurs when stone falls into the space in the volcano that the magma once was and becomes lava.

Question 33

Stratovolcanos solidify to form this type of rock: ________. Where did its name originate from and why?

Answer 33

Andesite Came from the Andes that is made 52-63% of silica

Question 34

Cinder cones are > _____ m and are made of __________ _______ such as _________. They have very violent explosions

Answer 34

400 Pyroclastic Scoria

Question 35

Pyroclastic material that is > 2mm in size is considered _____. _____ does fly very far because cinder cones are very narrow, this material solidifies midair

Answer 35

Ash Scoria

Question 36

_____ ______ are very small volcanos with very viscous magma. It is located near ______volcanos

Answer 36

Lava domes Strato-

Question 37

Mount Royal is a product of a _____ ______

Answer 37

Hot spot