6th Grade Geology: Earth Structure And Composition

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| By JacobStudent

JacobStudent

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Quizzes Created: 2 | Total Attempts: 34,764

Questions: 8 | Attempts: 347 | Updated: Mar 21, 2023

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Earth Structure and Composition

Questions and Answers

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 Silicon

Explanation
Most rocks that make up the Earth's crust are mad up primarily of the elements silicon(27%) and oxygen(45%).

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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 Calcium

Explanation
The crust also holds small amounts of Aluminum, Iron, Calcium, Magnesium, Sodium, and other elements.

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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 Core

Explanation
The crust is the top layer, then the mantle, followed by the outer and inner core.

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2
0
4.

The Outer core is the thickest layer of the Earth
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The mantle is the thickest layer.

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5.

The Inner core is liquid lava
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Although the inner core is very hot, it is kept solid due to the great pressure of the layers above it.

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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. Magma

Explanation
High temperatures (2800-3200 degrees Celsius) in the upper part of the mantle melt rocks, forming magma that flows like hot thick oatmeal.

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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 equator

Explanation
The Earth's shape is not perfectly spherical.

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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. True

Explanation
see question 7.

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6th Grade Geology: Earth Structure And Composition

The Earth's crust is mostly made of

Other elements that are in the Earth's crust are:

The layers of the Earth are:

The Outer core is the thickest layer of the Earth

The Inner core is liquid lava

Melted rocks from the mantle are called

The Earth is a little flattened at the ________ and bulges a bit at __________.

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.

The Earth is a little flattened at the and bulges a bit at __.