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Natural Hazards 1a and Plate Tectonics 1 Flashcards | StudBud
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Natural Hazards 1a and Plate Tectonics 1
Natural Hazards 1a and Plate Tectonics 1
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#Summit Power Focus Area Quiz over Natural Hazards 1a and Plate Tectonics 1
Flashcards
25 cards
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Questions
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Answers
1
Most volcanoes occur along diverging plate boundaries or at subduction zones.
True
False
2
The more ___ magma contains, the thicker it is.
air
silica
carbon dioxide
lava
3
Harry Hess' mapping during World War 2 led to evidence for seafloor spreading. What did he use?
underwater cameras
studies of living things
rock samples
sonar surveys (sound waves)
4
How do tsunami waves compare to regular ocean waves?
They extend deeper underneath the water's surface
They're generally much flatter
They contain much more debris
They're generally much wider
5
The Himalayan mountains (and Mt. Everest) were formed because of a
transform boundary
hot spot
divergent boundary
convergent boundary
6
Another word for the focus, or where the earthquake starts below the surface is the...
epicenter
focus
hypocenter
shopping center
7
Which of these are evidence of Alfred Wegener's theory of continental drift?
similar rocks on the opposite sides of oceans
all of these
the fit of the continents
the distribution of ancient fossils
8
The Earth's continents were one giant continent called...
Pangaea
Eurasia
Wegener
McDonalds
9
Why are surface waves more destructive than the initial seismic wave in an earthquake?
It reaches the surface faster
It travels further from the hypocenter
It creates more sustained motion on the surface
It reaches deeper below the surface
10
The place where two plates move apart is called a
divergent boundary
transform boundary
convergent boundary
11
What is this instrument called?
Richter Scale
Seismograph
Electrograph
Barometer
12
Oceanic crust is ____________________ than continental crust
less dense
more hot
more dense
less hot
13
Circular motion created in liquids and gases when hot materials rise and cold materials sink
Conduction
Radiation
Convection
14
What created the Hawaiian islands?
An oceanic plate subducted, creating volcanoes
The crust moved over a hot spot to create lots of volcanoes
A hot spot moved under the crust to create lots of volcanoes
Hawaiian islands are not volcanoes
15
What type of fault is the San Andreas Fault?
a transform fault
a strike-slip fault
a normal fault
a reverse fault
16
The area around the Pacific Ocean is often called the ____ because there are so many volcanoes.
Subduction Zone
Pacific Plate
Ring of Fire
Circle of Earthquakes
17
What does sea floor spreading do?
create large mountains on continents
create new crust
destroy the earth's plates
preserve fossils
18
Which of the following is an opinion about volcanic activity?
A large number of volcanoes are around the Pacific Ocean
Volcanoes are made of hardened lava
The 1991 eruption of Mt Pinatubo was the scariest eruption
Shield volcanoes can create new land
19
What's the main cause of most earthquakes?
Hurricanes
Changes in temperature in Earth's mantle
Human activity
Pressure from within Earth's crust
20
Place the following from highest to lowest temperature: A.Lithosphere B.Mantle C.Core
CAB
ABC
BCA
CBA
21
This volcano is normally one of the smallest types. Mexico's Paracutin is this type.
Stratovolcano
Cinder cone volcano
None of these
Shield volcano
22
What scale do geologists use to measure earthquakes today?
The moment magnitude scale
The Richter scale
The seismograph scale
The Mercalli scale
23
Which is NOT one of the three types of stress to occur in the earth's crust?
divergence
tension
shear
compression
24
When lava is underground it is called magma.
true
false, when magma is underground it is called lava
25
What is a break in the Earth's crust where slabs of rock slip past each other?
Hot spot
Fault
Plate tectonics
Air mass
