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Related Flashcards
Cards In This Set
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What causes the Earth's equatorial bulge?
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The Earth's rotation
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What causes the Earth's spherical shape?
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The Earth's gravity
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Which following provides significant information about the composition of the Earth's interior?
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Only analysis of the Earth's density and study of the seismic waves are correct choices.
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Which of the following is the most abundant gas in the Earth's atmosphere?
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Nitrogen
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What causes precession?
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The gravitational interaction of the Sun and of the Moon with the equatorial bulge of the Earth.
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What property of the seismic waves allows scientists to derive information about the Earth's interior?
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Both the S waves can propagate only through solids and the speed of the seismic waves through a material depends on the nature of the material are correct.
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What is the mechanism that produces the Earth's magnetic field?
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The combination of the Earth's rotation and convection currents in the Earth's molten core.
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What is the origin of oxygen gas in the Earth's atmosphere?
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It was produced by photosynthesis.
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Which of the following demonstrates that the Earth spins around an axis?
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The Coriolis effect
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Which of the following result from the Coriolis effect?
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All of the choices are correct
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Suppose that we have a sample of 20 atoms of radioactive potassium. How many atoms of calcium do you expect to find in this sample after 1.3 billion years?
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9
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What causes the hot inner part of the Earth's core to be solid and not liquid?
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The extreme pressure at the inner core causes the atoms to hold in place together and form a solid.
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Which of the following is true about ozone?
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All of the choices are correct.
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Which of the following is true about the Earth's magnetic field?
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All of the choices are correct.
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The __ type seismic waves can travel through liquids. The __ type seismic waves can travel through solids only.
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P; S
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