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Earth Science Review
Earth Science Review
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Basic 9th grade Earth Science review.
Flashcards
25 cards
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Practice quiz
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Host live
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Questions
25
Answers
1
Which is not an agent of weathering?
Wind
Ice
Precipitation
Soil
2
What type of eruption did this rock most likely come from?
Tectonic
Non-explosive
Explosive
Mild
3
What is the largest tectonic plate?
Eurasian plate
Antarctic plate
Pacific plate
Scotia plate
4
The movement of weathered materials from one location to another is called
Physical weathering
Chemical weathering
Erosion
Exfoliation
5
What caused Earth to develop layers as it cooled?
The magnetic field
Escaping gases
Differences in density
The speed of rotation
6
The core of the earth is composed primarily of
Iron and sulfur
Nickel and cobalt
Iron and nickel
Silicon and oxygen
7
A volcano is an opening in Earth that erupts
Lava
Gases
Ash
All answers are correct
8
Of the answers below, which one is evidence of seafloor spreading?
Puzzle like fit of the continents
Fossil evidence found in South America and Africa
Magnetic reversal evident at mid-ocean ridges
Climate clues
9
What is the most abundant element found in the crust of the earth?
Silicon
Iron
Carbon
Oxygen
10
What kind of plate boundaries form folded mountains?
India and Euroasia
Divergent
Stike-slip
Convergent
11
What force ultimately drives plate motion in the theory of plate tectonics?
Ridge-push
Unequal distribution of heat within Earth
Slab-pull
The sun's energy
12
The Indian Plate pushing against the Eurasian plate is the reason why we have
Yosemite
The Rocky Mountains
The European Alps
The Himalayas
13
How many seismograph stations does it take to calculate an epicenter?
4
2
3
1
14
Which of these is an example of weathering?
Water freezes
Plant roots widen a crack in a rock
Mountains are built
A volcano erupts
15
What is it called when plates move away from each other?
Transvergence
Divergence
Convergence
16
Periods during Earth's history when huge numbers of species suddenly disappeared are called
Period conclusions
Isolations
Mass extinctions
Variations
17
What causes erosion?
All of the above
Ice
Moving water
Wind
18
A topographic map contains
Roads
Rivers
Buildings
All of the above
19
The point on the earth's surface directly above the location at which an earthquake begins is
Locus
Epicenter
Ground zero
Focus
20
Which is a possible explanation for mass extinctions?
Woolly mammoths left no offspring
A meteorite collided with Earth
The continents separated
Earth had no water
21
The measure of the amount of energy released in an earthquake.
Momentum Magnitude
Richter Magnitude
Aftershock
Magnitude
22
The magnetic field is probably generated by
Fluid movements in the outer core
The tilt of the Earth's rotational axis
The solar wind
Deformation of the asthenosphere
23
The breaking down of rocks on the earth's surface is
Weathering
Mechanical weathering
Chemical weathering
Erosion
24
What is one reason that the Earth's core is so hot?
Radioactive decay
The Sun heats up the Earth and causes the inside to melt.
Coal and oil burn in the core
25
The process of change in a crust due to the motion of hot material underneath is called what?
Volcanism
Impact Cratering
Tectonics
Weathering and erosion
