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21 Cards in this Set
- Front
- Back
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What type of plate motion occurs at the San Andreas Fault? |
Transform boundary (lateral motion) |
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Which seismic wave travels faster and takes less time to arrive at a seismic station? |
P waves |
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How many seismic stations are needed to find the epicenter?How can you tell exactly where the epicenter is using the data? |
3 are needed. By seeing where the three circles intersect. |
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How do conglomerate rocks form? |
By the consolidation and lithification of gravel. |
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List three pieces of evidence that prove that the continents were once joined? |
Pangea, same fossils found in places, and glaciers found in wrong places |
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Compare the density and thickness of the continental and oceanic crust. |
Continental is more thicket, oceanic is thinner. Oceanic is more dense, continental is less dense |
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Which element is most abundant in the crust of the earth. |
Oxygen |
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South America would have been joined with which continent during Pangea? |
Africa |
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How does rock salt form? |
From the evaporation of sea water. |
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Igneous rocks that form deep underground will have what kind of texture? |
Rough |
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Igneous rocks that form deep underground will have what kind of texture? |
Rough |
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Which type of wave is a p wave and an S wave? Which is compressional which is shear. Which one will not penetrate the outer core? |
p waves (primary waves) are compressional and can penetrate everything. S waves (secondary waves) are shear and cannot penetrate through the outer core. |
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Describe how coal forms. What does organic composition mean? |
Dead plant and animal remains are turned into peat to make coal. Organic composition means |
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What kind of rock forms the crust at the mid ocean ridge? |
Basalt (Igneous rock) |
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Describe how you can tell a seismic station is far away from the epicenter just by looking at the seismograph? What is a shadow zone? |
You can tell it is far away by looking a the distance between the p and S waves. A shadow zone is where s and p waves can not be detected. |
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Describe how you can tell a seismic station is far away from the epicenter just by looking at the seismograph? What is a shadow zone? |
You can tell it is far away by looking a the distance between the p and S waves. A shadow zone is where s and p waves can not be detected. |
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How do fossils get up on the tops of mountains? |
Evidence of Pangea and that at one point the land was all covered by sea and the sea level went down over time |
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Describe how you can tell a seismic station is far away from the epicenter just by looking at the seismograph? What is a shadow zone? |
You can tell it is far away by looking a the distance between the p and S waves. A shadow zone is where s and p waves can not be detected. |
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How do fossils get up on the tops of mountains? |
Evidence of Pangea and that at one point the land was all covered by sea and the sea level went down over time |
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What kind of rock is composed of the mineral halite? |
Sedimentary rock |
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The earths outer core is composed of what to metals? Is it a liquid or a solid? |
Iron and nickel. It is a liquid. |
