Interior Of The Earth
Covers the Earth' s layers
Questions and Answers
- 1.
Which is the correct order of the earth's layers starting from the inside and going outwards?
- A.
Crust, mantle, outer core, inner core
- B.
Mantle, crust, outer core, inner core
- C.
Inner core, outer core, mantle, crust
- D.
Continental cruse, oceanic crust, mantle, core
Correct Answer
C. Inner core, outer core, mantle, crustExplanation
The correct order of the Earth's layers starting from the inside and going outwards is inner core, outer core, mantle, crust. The inner core is the solid innermost layer, followed by the outer core which is a liquid layer. The mantle is the thickest layer and is composed of semi-solid rock. The crust is the outermost layer and is the thinnest layer, consisting of solid rock.Rate this question:
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- 2.
A compound is:
- A.
Two or more rocks
- B.
Two or more elements
- C.
Two or more atoms
- D.
Two or more molecules
Correct Answer
B. Two or more elementsExplanation
A compound is formed when two or more elements chemically combine together. It is different from a mixture as the elements in a compound are chemically bonded, resulting in a new substance with different properties than the individual elements. Therefore, the correct answer is "two or more elements".Rate this question:
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- 3.
The core contains the densest elements. What does the word "dense" mean in this sentence?
- A.
Far apart
- B.
Not that bright
- C.
Closely compacted together
- D.
Very thick
Correct Answer
C. Closely compacted togetherExplanation
In this sentence, the word "dense" is used to describe the elements in the core. When something is "dense," it means that it is closely compacted together, implying that the elements in the core are tightly packed.Rate this question:
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- 4.
The two kinds of crust are continental and:
- A.
Oprahanic
- B.
Oceanic
- C.
Octopanic
- D.
None of the above
Correct Answer
B. OceanicExplanation
The two kinds of crust are continental and oceanic. Continental crust is thicker and less dense, mainly composed of granite rocks, and forms the continents. Oceanic crust, on the other hand, is thinner and more dense, primarily made up of basalt rocks, and forms the ocean floors. This distinction in composition and thickness is what differentiates the two types of crust.Rate this question:
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- 5.
Which of the following statements is NOT true about continental crust?
- A.
It is thicker and less dense than oceanic crust.
- B.
It is up to 100km thick.
- C.
It can be found beneath the ocean.
- D.
If forms the continents.
Correct Answer
C. It can be found beneath the ocean.Explanation
The statement "It can be found beneath the ocean" is not true about continental crust. Continental crust is primarily found beneath the continents and is thicker and less dense than oceanic crust. It forms the landmasses and is up to 100km thick. However, oceanic crust is found beneath the ocean and is thinner and denser than continental crust.Rate this question:
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- 6.
Oceanic crust contains more ________ than continental crust.
- A.
Salt
- B.
Rocks
- C.
Iron
- D.
Magnesium
Correct Answer
C. IronExplanation
Oceanic crust contains more iron than continental crust. This is because oceanic crust is primarily composed of basalt, which is rich in iron and magnesium. In contrast, continental crust is made up of a variety of rock types, including granite, which has a lower iron content. The higher iron content in oceanic crust is due to the presence of iron-rich minerals such as pyroxene and olivine.Rate this question:
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- 7.
Most of the earth's mass is contained in the:
- A.
Crust
- B.
Mantle
- C.
Outer core
- D.
Inner core
Correct Answer
B. MantleExplanation
The mantle is the correct answer because it is the layer of the Earth that lies between the crust and the outer core. It is the largest layer of the Earth by volume and makes up about 84% of the Earth's total volume. The mantle is composed of solid rock that is capable of flowing slowly over long periods of time. It plays a crucial role in the movement of tectonic plates and the convection currents that drive plate tectonics.Rate this question:
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- 8.
Which is NOT a possible way that scientists can learn about the mantle?
- A.
By digging down directly to it.
- B.
By studying rocks.
- C.
By observing the Earth's surface
- D.
By studying the ocean floor.
Correct Answer
A. By digging down directly to it.Explanation
Scientists cannot dig down directly to the mantle because it is located beneath the Earth's crust, which is several kilometers thick. Therefore, they cannot physically access the mantle through digging. However, scientists can learn about the mantle by studying rocks, observing the Earth's surface, and studying the ocean floor, which can provide indirect information about the composition and behavior of the mantle.Rate this question:
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- 9.
Which of the following statements is true about the crust?
- A.
It is 67% of the Earth's mass
- B.
It is about 3,00 km thick
- C.
It is less than 1% of the Earth's mass
- D.
It includes 3 different types
Correct Answer
C. It is less than 1% of the Earth's massExplanation
The crust is the outermost layer of the Earth's surface. It is composed of solid rock and is relatively thin compared to the other layers of the Earth. The statement that the crust is less than 1% of the Earth's mass is true because the crust is much thinner and less dense than the mantle and the core. The majority of the Earth's mass is concentrated in the mantle and the core, while the crust makes up only a small fraction of the total mass of the planet.Rate this question:
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- 10.
The crust is about 50-70km thick.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The crust is not about 50-70km thick. The Earth's crust varies in thickness, with oceanic crust being thinner (about 5-10km) and continental crust being thicker (about 30-50km). Therefore, the given statement is false.Rate this question:
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- 11.
The inner core is liquified.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "The inner core is liquified" is false. The inner core of the Earth is actually solid, composed mainly of iron and nickel. It is surrounded by the outer core, which is in a liquid state due to the high temperatures and pressure. The solid inner core and liquid outer core play a crucial role in generating Earth's magnetic field.Rate this question:
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- 12.
Scientist believe that the inner core is made mostly of:
- A.
Gold
- B.
Silver
- C.
Magnesium
- D.
Iron
Correct Answer
D. IronExplanation
The correct answer is iron because it is widely accepted by scientists that the inner core of the Earth is primarily composed of iron. This is based on various pieces of evidence, such as seismic data and the behavior of Earth's magnetic field. Iron is known to have the necessary properties, such as high density and ability to withstand extreme pressure and temperature, to form the solid inner core of our planet.Rate this question:
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- 13.
Continental crust can be up to 100km thick.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The continental crust can indeed be up to 100km thick. This is in contrast to the oceanic crust, which is generally much thinner, around 7-10km thick. The continental crust is composed of a variety of rocks, including granite, and it is less dense than the oceanic crust. The thickness of the continental crust can vary depending on factors such as tectonic activity and the age of the crust.Rate this question:
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- 14.
How many meters are in a kilometer?
- A.
10
- B.
100
- C.
1,000
- D.
100,000
Correct Answer
C. 1,000Explanation
There are 1,000 meters in a kilometer. This is because the prefix "kilo-" in the metric system denotes a factor of 1,000. Therefore, when converting from kilometers to meters, we multiply the number of kilometers by 1,000 to get the equivalent distance in meters.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Sep 23, 2013Quiz Created by
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