6th Grade Geology: Earth Structure And Composition
Earth Structure and Composition
- 1.
The Earth's crust is mostly made of
- A.
Oxygen and Iron
- B.
Rock and Soil
- C.
Aluminum and Silicon
- D.
Oxygen and Silicon
Correct Answer
D. Oxygen and SiliconExplanation
Most rocks that make up the Earth's crust are mad up primarily of the elements silicon(27%) and oxygen(45%).Rate this question:
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- 2.
Other elements that are in the Earth's crust are:
- A.
Sodium, lava, and soil
- B.
Aluminum, Iron, and Calcium
- C.
Molten lava, Sodium, and Iron
- D.
Aluminum, Iron, and bones
Correct Answer
B. Aluminum, Iron, and CalciumExplanation
The crust also holds small amounts of Aluminum, Iron, Calcium, Magnesium, Sodium, and other elements.Rate this question:
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- 3.
The layers of the Earth are:
- A.
Crust, Mantle, Outer Core, and Inner Core
- B.
Crust, Top Middle, Bottom Middle, and Core
- C.
Top Soil, Molten Lava, Outer Core, and Inner Core
- D.
Crust, Mantle, Lava Center, and Core
Correct Answer
A. Crust, Mantle, Outer Core, and Inner CoreExplanation
The crust is the top layer, then the mantle, followed by the outer and inner core.Rate this question:
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- 4.
The Outer core is the thickest layer of the Earth
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The mantle is the thickest layer.Rate this question:
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- 5.
The Inner core is liquid lava
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Although the inner core is very hot, it is kept solid due to the great pressure of the layers above it.Rate this question:
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- 6.
Melted rocks from the mantle are called
- A.
Sedimentary rocks
- B.
Lava
- C.
Molten lava
- D.
Magma
Correct Answer
D. MagmaExplanation
High temperatures (2800-3200 degrees Celsius) in the upper part of the mantle melt rocks, forming magma that flows like hot thick oatmeal.Rate this question:
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- 7.
The Earth is a little flattened at the ________ and bulges a bit at __________.
- A.
Sea level and mountain tops
- B.
Poles and equator
- C.
Top and sides
- D.
Prime meridian and equator
Correct Answer
B. Poles and equatorExplanation
The Earth's shape is not perfectly spherical.Rate this question:
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- 8.
The distance from the North and south pole is smaller than from a point on the equator to an opposite point halfway around the equator.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
see question 7.Rate this question:
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Mar 21, 2023Quiz Edited by
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Feb 25, 2013Quiz Created by
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