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Volcanoes and Volcanic Eruptions

Total questions: 35

Worksheet time: 35mins

Name
Class
Date
1.

What answer choice represents molten rock beneath the Earth's surface?

a)

magma

b)

lava

c)

volcanic gases

d)

viscosity

e)

pyroclasts

2.

What answer choice represents the reason why volcanoes could have explosive eruptions?

a)

magma

b)

lava

c)

volcanic gases

d)

viscosity

e)

pyroclasts

3.

What answer choice represents the degree in which lava will flow easily or not?

a)

magma

b)

lava

c)

volcanic gases

d)

viscosity

e)

pyroclasts

4.

What answer choice represents magma that has thin lava flows of low viscosity and surface skin is smooth?

a)

Pahoehoe Flows

b)

'A'a Flows

c)

Pillow Lavas

d)

Columnar Jointing

e)

Siliceous Lava Flows

5.

What answer choice represents magma that has higher viscosity that will have rough surfaces due to escaping gases?

a)

Pahoehoe Flows

b)

'A'a Flows

c)

Pillow Lavas

d)

Columnar Jointing

e)

Siliceous Lava Flows

6.

What answer choice represents hexagonal formations due to contracting cooled lava flows?

a)

Pahoehoe Flows

b)

'A'a Flows

c)

Pillow Lavas

d)

Columnar Jointing

e)

Siliceous Lava Flows

7.

What answer choice represents vessels of lava that drain out and form an open cave?

a)

Magmatic Plumes

b)

Lava Tubes

c)

Pillow Lavas

d)

Columnar Jointing

e)

Siliceous Lava Flows

8.

What answer choice best represents hot, broken fragments projected through the air after explosions of liquid clots of magma?

a)

pyroclasts

b)

tephra

c)

specifically blocks

d)

specifically bombs

e)

pumice

9.

What answer choice best represents loose assemblages that are classified by size that are projected from the volcano that include ash or lapili?

a)

pyroclasts

b)

generally tephra

c)

specifically blocks

d)

specifically bombs

e)

pumice

10.

What answer choice best represents projectiles that have an aerodynamic shape indicating they were liquid when ejected?

a)

pyroclasts

b)

generally tephra

c)

specifically blocks

d)

specifically bombs

e)

pumice

11.

What answer choice best represents a characteristic of bombs and lapili consisting of vesicles (gas bubbles) that result in high vesicular rock fragments (like a sponge)?

a)

pyroclasts

b)

generally tephra

c)

specifically blocks

d)

specifically bombs

e)

pumice

12.

An 8-km crater like the one found in Crater Lake is a characteristic of _______.

a)

shield volcanoes

b)

stratovolcanoes

c)

calderas

13.

Using the image, what letter represents the eruption column?

a)

Letter A

b)

Letter B

c)

Letter C

d)

Letter D

e)

Letter E

14.

Using the image, what letter represents the tephra fall deposit?

a)

Letter A

b)

Letter B

c)

Letter C

d)

Letter D

e)

Letter E

15.

Using the image, what letter represents the tephra?

a)

Letter D

b)

Letter E

c)

Letter F

d)

Letter G

e)

Letter H

16.

What answer choice best describes a non-explosive eruption due to low gas content and low viscosity magmas?

a)

effusive eruption

b)

explosive eruption

c)

eruption column

d)

ash fall

e)

Strombolian eruption

17.

What answer choice best describes an eruption with high gas content and high viscosity magmas?

a)

effusive eruption

b)

explosive eruption

c)

eruption column

d)

ash fall

e)

Strombolian eruption

18.

What answer choice best describes a dangerous volcanic eruption where the eruption column that collapses?

a)

pyroclastic flow

b)

ignimbrite

c)

lateral blast

d)

nueé ardentes

e)

lahars

19.

What answer choice best describes when gas pressure inside the magma is projected outward instead of upward?

a)

pyroclastic flow

b)

ignimbrite

c)

lateral blast

d)

nueé ardentes

e)

lahars

20.

What answer choice describes volcanic mudflow?

a)

pyroclastic flow

b)

ignimbrite

c)

ash column

d)

nueé ardentes

e)

lahars

21.

What answer choice best describes a volcano that has shown eruptive activity within recorded history?

a)

active volcano

b)

extinct volcano

c)

dormant volcano

d)

dead volcano

22.

What answer choice best describes a volcano that is somewhere between active and extinct?

a)

active volcano

b)

extinct volcano

c)

dormant volcano

d)

dead volcano

23.

Which ONE of the following is not a precursor event that indicates that a volcanic eruption is about to happen?

a)

volcanic earthquakes

b)

ground deformation

c)

changes in heat flow

d)

changes in gas composition

e)

lahars or volcanic mud flow

24.

Which ONE of the following is not a primary effect of volcanism?

a)

lava flows

b)

pyroclastic flows

c)

ash falls or tephra fall deposits

d)

gas emissions

e)

lahars or volcanic mud flow

25.

What answer choice best describes volcanoes around the Pacific Ring of Fire observed at subduction zones?

a)

volcanoes at divergent boundaries

b)

volcanoes at convergent boundaries

c)

volcanoes at hotspots

26.

What answer choice best describes volcanoes located on Iceland?

a)

volcanoes at divergent boundaries

b)

volcanoes at convergent boundaries

c)

volcanoes at hotspots

27.

Which ONE of the following answer choices is not an aspect of the nature of science highlighted by the case of the dinosaur disappearance?

a)

Science can test hypotheses about events that happened long ago.

b)

Scientific ideas are tested with multiple lines of evidence.

c)

Science relies on communication within a large scientific community

d)

The process of science is non-linear, unpredictable, and ongoing

e)

Science doesn't not require many different scientific disciplines to solve a problem. It only requires one.

28.

What does the K and the T stand for when referring to the K-T Boundary?

a)

Cretaceous-Tertiary

b)

Cretaceous-Triassic

c)

Krebs-Tertiary

d)

Chicxulub-Tertiary

e)

Jurassic-Tertiary

29.

What isotope had inaccurate published decay rates that wasn't a good timer in the K-T Boundary case study?

a)

beryllium-10

b)

plutonium-244

c)

carbon-13

d)

iridium

30.

After beryllium-10 was found to be inaccurate, Dr. Luis Alvarez came up with this new element to use to measure the K-T Boundary?

a)

beryllium-10

b)

plutonium-244

c)

carbon-13

d)

iridium

31.

When testing for iridium at the K-T boundary, what was surprising about the findings?

a)

they found 30 times more iridium than expected

b)

they found the amount they expected to find

c)

they found a little less iridium than expected

d)

they didn't find an traces of iridium and ruled out a supernova

32.

Wallace Tucker came up with a theory to account for the "sky-high" iridium levels at the K-T Boundary. What was this theory?

a)

Super Nova

b)

Asteroid Impact

c)

Climate Change

d)

Plate Tectonics

e)

Volcanic Activity

33.

What hypothesis did Dr. Luis Alvarez come up with to account for radiation and the disappearance of the dinosaurs?

a)

Super Nova

b)

Asteroid Impact

c)

Climate Change

d)

Plate Tectonics

e)

Volcanic Activity

34.

Where was the impact crater found that is now believed to be the impact area of the meteorite that killed off the dinosaurs?

a)

Yucatan Peninsula

b)

Gubbio, Italy

c)

Stevns Klint, Denmark

d)

Morgan Creek, Saskatchewan

e)

Woodside Creek, New Zealand

35.

What answer choice best describes a volcano that results from plumes of hot mantle material upwelling toward the surface?

a)

volcanoes at divergent boundaries

b)

volcanoes at convergent boundaries

c)

volcanoes at hotspots

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