1.How are Earthquakes Measured? A.Saffir-Simpson Scale B.Magnitude Scale C.Richt
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Question
1.How are Earthquakes Measured? A.Saffir-Simpson Scale B.Magnitude Scale C.Richter Scale D.Fujita Scale2.Why does the Earth have a magnetic field? A.The spinning of the Mantle B.The spinning of the Outer core C.The spinning of the Crust D.The spinning of the Inner core
3.The outer brittle shell of the Earth is the ______ that forms the "skin" of the lithosphere. A.mantle B.inner core C.outer core D.crust
4.Geoscientists obtain seismic data from: (Mark All that Apply). A.naturally occurring earthquakes B.the tides C.the coriolis force D.human-induced explosions
5.The _________ comprises 80% of the Earth's total volume A.inner core B.mantle C.outer core D.crust 5.The _________ comprises 80% of the Earth's total volume A.inner core B.mantle C.outer core D.crust
6.Match the following theories, laws and hypothesis with the correct descriptions.
A.Seafloor Spreading Hypothesis ?choose one from pciture below?
B.Theory of Plate Techtonics?choose one from pciture below? C.Theory of Continental Drift ?choose one from pciture below?
D.Law of Conservation of Mass ?choose one from pciture below?
7.What is the deepest that humans have been able to dig into Earth? A.7.6 miles B.16.2 miles C.170.2 miles D.1.7 miles
8.Match Earth's layers with the correct description. A.Mantle ?choose one from pciture below?
B.Inner Core ?choose one from pciture below?
C.Crust ?choose one from pciture below?
D.Outer Core ?choose one from pciture below? 8.Match Earth's layers with the correct description. A.Mantle ?choose one from pciture below?
B.Inner Core ?choose one from pciture below?
C.Crust ?choose one from pciture below?
D.Outer Core ?choose one from pciture below?
Explanation / Answer
1.How are Earthquakes Measured?
ANSWER IS:
C.Richter Scale
EXPLANATION :
The Richter scale measures earthquake intensity. It is developed by Caltech professor Charles Francis Richter.
2.Why does the Earth have a magnetic field?
ANSWER IS:
B.The spinning of the Outer core
EXPLANATION:
The Earth's magnetic field is generated by convective currents in the outer core.
The magnetic field protects living organisms from harmful solar particles.
Earth's magnetic field caused by the spinning motion of the liquid metals which are iron and nickel in the outer core.
3.The outer brittle shell of the Earth is the ______ that forms the "skin" of the lithosphere.
ANSWER IS:
D. crust
EXPLANATION:
The outer brittle shell of the Earth forms the skin of the lithosphere, which is broken into several continental and oceanic tectonic plates.
4.Geoscientists obtain seismic data from: (Mark All that Apply).
ANSWER IS:
human-induced explosions
naturally occurring earthquakes
EXPLANATION:
Seismic energy produce 2 types of waves that are useful to study the Earth's interior.
5.The _________ comprises 80% of the Earth's total volume
ANSWER IS:
mantle
EXPLANATION:
The mantle is over 2900 km thick and comprises 80% of the Earth's total volume. Mantle is composed of peridotite which is rich in iron and magnesium.
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