Modified True or False: Write TRUE if the statement is correct and if False change the underlined word/d to make statement correct. Place your answer on the space provided before the number.
_______1. Seismologists use earthquakes to be able to "see" inside the earth.
_______2. The vibrations are more properly called body waves.
_______3. Seismic waves are the first seismic waves that are recorded on a seismogram.
_______4. The layers of the earth have different densities and elastic properties.
_______5. Mantle is the densest layer of the earth's interior.
_______6. Secondary waves are longitudinal waves because they rise and fall
_______7. Crust is a solid rock layer that makes up the outermost shell of the earth.
_______8. Seismic waves travel through the upper part of the Earth.
_______9. The speed and the direction of the body wave changes as they pass through the different layers.
_______10. The outer core differs from the rest of the earth's interior because it is the only solid layer.
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Answer:
1.False
2.True
3.False
4.True
5.True
6.True
7.False
8.True
9.False
10.true