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Final Exam Review: 9th Grade Earth Science UPDATED Actual Exam Questions and CORRECT Answers $8.99
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Final Exam Review: 9th Grade Earth Science UPDATED Actual Exam Questions and CORRECT Answers
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Final Exam Review: 9th Grade Earth Science UPDATED Actual Exam Questions and CORRECT Answers Defined the lithosphere - CORRECT ANSWER- First crust and the upper mantle 100 km thick Define asthenosphere - CORRECT ANSWER- Bottom part of the mantle hotter flows more Describe the inner core ...

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  • September 16, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • Earth Science
  • Earth Science

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Final Exam Review: 9th Grade Earth
Science UPDATED Actual Exam Questions
and CORRECT Answers
Defined the lithosphere - CORRECT ANSWER✔✔- First crust and the upper mantle 100 km
thick


Define asthenosphere - CORRECT ANSWER✔✔- Bottom part of the mantle hotter flows
more


Describe the inner core - CORRECT ANSWER✔✔- Solid made of iron and nickel



Describe the outer core - CORRECT ANSWER✔✔- Liquid layer composed of iron and
nickel


Describe the Earth's magnetic field - CORRECT ANSWER✔✔- Magnetic field extends from
earth interior to where it meets the solar winds has two poles it is an electronic stream
produced by the outer core going around the inner core like a generator


How is the Earth's magnetic field generated - CORRECT ANSWER✔✔- Outer core going
around the inner core


Compare the properties of continental crust and oceanic crust - CORRECT ANSWER✔✔-
Oceanic crust is thinner denser and younger
Continental crust is thicker less dense and older


What type of rock makes of continental crust - CORRECT ANSWER✔✔- Granitic
composition


What type of rock makes up oceanic crust - CORRECT ANSWER✔✔- Basaltic composition

, List three uncertainties we have a of earth's interior - CORRECT ANSWER✔✔- 1. We have
never been to the mantle or core
2. All we have is indirect evidence know exact material 3. Boundary lines


How do seismic waves help us determine the make up of earths interior - CORRECT
ANSWER✔✔- There are points inside earth that S waves do not pass through, called shadow
zones revealing there has to be different layers. after earthquakes the shadow zone shows
there has to be some type of liquid center


Define seismic energy - CORRECT ANSWER✔✔- It wave of energy that is generated by an
earthquake or other earth vibration and that travels with in the earth or along its surface


Explain the uncertainties we have about earth magnetic field - CORRECT ANSWER✔✔- 1.
The Sun has a magnetic field but has no iron
2. The moon has a magnetic field no liquid core
3. we cannot go down 4. Our theory only explains how earth has a magnetic field


Compare the speed at which the three seismic waves travel - CORRECT ANSWER✔✔- P
waves are first, S waves are second, L waves are last


Describe P waves - CORRECT ANSWER✔✔- These waves are able to temporarily change
the volume of the material they travel through caused by push and pull action goes through
anything


Describe as waves include what they travel through - CORRECT ANSWER✔✔- These
waves shake particles at right angles to the direction of travel. Travel through solids not
liquids


Describe L waves - CORRECT ANSWER✔✔- Most damaging of all seismic waves. Travel
along the surface of Earth


Describe why many earthquakes do not have her below 650 km - CORRECT ANSWER✔✔-
Mantle gets too soft so it can't snap

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