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Course: Alhussan Chemistry — Stage 7
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Alhussan Chemistry — Stage 7

Chapter 1: The Particle Model and States of Matter

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Chapter 2: Elements, Compounds and Mixtures

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Chapter 3: Metals and Non-Metals

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Chapter 4: Chemical Reactions 1

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Chapter 5: Acids and Alkalis

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Chapter 6: The Earth and Plate Tectonics

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Quiz

Chemistry 6.4 Volcanoes — Quiz

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  • Questions count: 50
  • Passing grade: B+
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1.
Crystal size and cooling time. Calculate the percentage change in "Crystal size (mm)" from 1 to 1000.
Dr Dabour Hub Academy - figure 1
8000%
7900%
99%
−7900%
2.
Gases released by a volcano (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
3.
Gases released by a volcano (%). About how many times bigger is Water vapour than Other?
Dr Dabour Hub Academy - figure 3
29.3
22.0
7.3
14.7
4.
Volcanic gases include carbon dioxide and ____.
helium
neon
oxygen
sulfur dioxide
5.
Gases released by a volcano (%). Which has the greatest value?
Dr Dabour Hub Academy - figure 4
Water vapour
Sulfur dioxide
Other
Carbon dioxide
6.
True or false? Lava cools to form igneous rock.
True
False
7.
Which is the correct definition of “Vent”?
A volcano that has erupted recently.
Thin solid outer layer of the Earth.
Opening of a volcano.
All matter is made of tiny moving particles.
8.
Lava cooled from 1200 °C to 800 °C in 4 h. Mean cooling rate?
300 °C/h
1600 °C/h
500 °C/h
100 °C/h
9.
Which is the correct definition of “Igneous rock”?
Elements chemically joined in a fixed ratio.
Where the sky seems to meet the land or sea.
Large moving slab of lithosphere.
Rock formed when magma or lava cools.
10.
Which statement is NOT correct?
Hawaii volcanoes form over a hot spot.
Basalt is sedimentary.
Lava cools to form igneous rock.
Slow-cooled magma forms large crystals.
11.
Gases released by a volcano (%). Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 5
A
B
C
D
12.
Crystal size and cooling time. At what value of "Cooling time (days)" is "Crystal size (mm)" smallest?
Dr Dabour Hub Academy - figure 6
1000
1
100
10
13.
Lava cooled from 1150 °C to 800 °C in 10 h. Mean cooling rate?
3500 °C/h
195 °C/h
35 °C/h
115 °C/h
14.
Lava flows at 2 m per minute. How far in 1 hours?
120 m
1200 m
2 m
3 m
15.
Which statement is NOT correct?
Lava can be over 1000 °C.
Scientists monitor volcanoes for earthquakes.
Lava is about 100 °C.
Hawaii volcanoes form over a hot spot.
16.
Hawaii volcanoes form over a ____.
hot spot
glacier
cold spot
conservative boundary
17.
Active volcanoes by region. Which has the greatest value?
Dr Dabour Hub Academy - figure 7
Pacific
Mediterranean
Africa
Atlantic
18.
Temperature of lava as it cools. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 8
A
B
C
D
19.
Pompeii was destroyed by ____.
Kilimanjaro
Vesuvius
Fuji
Etna
20.
Which statement is NOT correct?
Volcanic soil is often very fertile.
Extinct volcanoes erupt often.
Molten rock on the surface is called lava.
Scientists monitor volcanoes for earthquakes.
21.
Crystal size and cooling time. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 9
A
B
C
D
22.
Which term matches this definition? “Molten rock underground.”
Magma
Vent
Inner core
Mid-ocean ridge
23.
Lava flows at 5 m per minute. How far in 3 hours?
900 m
9000 m
8 m
15 m
24.
Lava cools to form ____ rock.
sedimentary
igneous
fossil
metamorphic
25.
Fast-cooled lava forms ____ crystals.
small
no
large
square
26.
Temperature of lava as it cools. What is the value of "Temperature (°C)" when "Time (h)" is 4?
Dr Dabour Hub Academy - figure 10
405
439
601
515
27.
Which term matches this definition? “Tiny pieces of rock thrown out by a volcano.”
Seafloor spreading
Ash
Conservative boundary
Convection current
28.
The pie chart shows where volcanoes are found. What does it show?
Dr Dabour Hub Academy - figure 11
None are at boundaries
Volcanoes are evenly spread
Most are at hotspots
Most volcanoes are at plate boundaries
29.
Lava cooled from 1200 °C to 600 °C in 10 h. Mean cooling rate?
180 °C/h
60 °C/h
6000 °C/h
120 °C/h
30.
True or false? There are about 500 active volcanoes in the world.
True
False
31.
Lava cooled from 1150 °C to 600 °C in 4 h. Mean cooling rate?
288 °C/h
438 °C/h
138 °C/h
2200 °C/h
32.
True or false? Volcanoes release only oxygen.
True
False
33.
Lava cooled from 1200 °C to 800 °C in 10 h. Mean cooling rate?
200 °C/h
120 °C/h
40 °C/h
4000 °C/h
34.
Lava cooled from 1200 °C to 520 °C in 4 h. Mean cooling rate?
2720 °C/h
430 °C/h
300 °C/h
170 °C/h
35.
Which term matches this definition? “Not erupting now but could again.”
Plate boundary
Constructive boundary
Dormant volcano
Earthquake
36.
True or false? Ash clouds are safe for planes.
True
False
37.
Lava cooled from 1150 °C to 800 °C in 4 h. Mean cooling rate?
288 °C/h
88 °C/h
1400 °C/h
488 °C/h
38.
Which is the correct definition of “Extinct volcano”?
Rock formed when magma or lava cools.
A large slab of the lithosphere that moves slowly.
Unlikely ever to erupt again.
A simplified representation of something.
39.
Why does magma rise?
It is cold
It is less dense than the surrounding solid rock
Wind pushes it
It is heavier
40.
Which statement is NOT correct?
Ash clouds are safe for planes.
Molten rock on the surface is called lava.
A dormant volcano could erupt again.
Slow-cooled magma forms large crystals.
41.
True or false? Most volcanoes are at plate boundaries.
True
False
42.
There are about ____ active volcanoes.
5
50
5000
500
43.
Which statement is NOT correct?
A dormant volcano could erupt again.
Volcanoes are only in hot countries.
Volcanic gases include carbon dioxide and sulfur dioxide.
Ash clouds can stop aeroplanes flying.
44.
Crystal size and cooling time. At what value of "Cooling time (days)" is "Crystal size (mm)" greatest?
Dr Dabour Hub Academy - figure 12
10
100
1000
1
45.
Lava can be over ____ °C.
100
10 000
10
1000
46.
True or false? There are 5 active volcanoes.
True
False
47.
True or false? Lava is about 100 °C.
True
False
48.
Temperature of lava as it cools. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 13
A
B
C
D
49.
A volcano released 10000 t of gas; 5% was SO2. Mass of SO2?
2000 t
9500 t
500 t
50,000 t
50.
Of 500 active volcanoes, 75% are at convergent boundaries. How many is that?
425
375
37,500
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Part of Chapter 6: The Earth and Plate Tectonics — see every lesson and quiz in this unit.
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