Internal Structure of the Earth: MCQ Test (25 questions)

Question 1 of 25

Which of the following statements is false?

AThe continent is mainly composed of granite rocks.
BBasalt rock predominates in the oceanic basin.
CThe core is also known as the barysphere.
DAbout 68 percent of the Earth's total volume and 83.5 percent of its mass is present in the mantle.

Question 2 of 25

Who first used the word "Sial" for the uppermost layer of the Earth?

AHolmes
BSwes
CJefferies
DDaily

Question 3 of 25

How many kilometers deep does the lithosphere extend to?

A80 km.
B100 km.
C180 km.
D200 km.

Question 4 of 25

What type of rocks make up the ocean floor?

AGranite
Bbasalt
Cflaky
DGabbro

Question 5 of 25

In which part of the Earth is nickel and iron predominant?

ASial
BLimit
CNife
Din none of the

Question 6 of 25

Approximately what percentage of the Earth's total mass is found in the mantle?

A0.32
B0.52
C0.68
D0.83

Question 7 of 25

What is the process called that moves, uplifts and creates parts of the Earth's surface?

APanel distortion
BUncovering
CDeterioration
Dvolcanic

Question 8 of 25

The Moho discontinuity is located at

Abetween the crust and the mantle
Bbetween the upper mantle and the lower mantle
Cbetween the mantle and the core
Dbetween the inner mantle and the outer mantle

Question 9 of 25

Which of the following elements predominate in the mantle?

Asilica and manganese
Bsilica and aluminum
Csilica and magnesium
Dsilica and iron

Question 10 of 25

In the structure of planet Earth, the core below the mantle is made up of which one of the following?

Aaluminum
BChromium
CIron
Dsilicon

Question 11 of 25

Suess divided the Earth's interior into three parts. His division does not include –

ASial
BLimit
CNife
DSubstratum

Question 12 of 25

What is the source of the most important information regarding the internal structure of the Earth?

Aunnatural sources
Bseismology
CVolcanic activity
Dplate tectonics

Question 13 of 25

The reason for the increase in temperature in the earth's crust is –

APressure
Bdisintegration of radioactive substances
Cboth of the above
Dnone of these

Question 14 of 25

The correct order of the different layers of the continental crust according to increasing depth is

ASedimentary, granite, basalt
BSedimentary, basalt, granite
Cgranite, sedimentary, basalt
Dgranite, basalt, scaly

Question 15 of 25

Which elements predominate in the Earth's core?

Asilica and aluminum
Bsilica and magnesium
Csilica and nickel
Diron and nickel

Question 16 of 25

The magnetic substance found at the centre of the Earth is

AGranite
Bbasalt
CNickel
DDiorite

Question 17 of 25

What would be the correct order of the following from the Earth's surface towards the centre? 1. Seima 2. Sial 3. Nife

A1,2,3
B2,1,3
C1,3,2
D3,2,1

Question 18 of 25

Who divides the geology into Sial, Sima and Nife?

Avan der Graat
BDaily
CHolmes
DSwes

Question 19 of 25

What is the result of folding action?

Acontinental force
Bgeostatic force
Cmountain building forces
Dexogenous forces

Question 20 of 25

The lithosphere includes –

Aupper crust only
Bboth the upper crust and the lower crust
Cthe upper crust, lower crust, and the solid upper part of the mantle
Dnone of these

Question 21 of 25

Which layer of the earth's surface has abundance of basalt rocks?

ASial
BLimit
CNife
Din none of the

Question 22 of 25

Based on the Earth's internal structure, the Earth's crust is divided into the crust, mantle, and core. Whose division is this?

AHolmes
BJefferies
CDaily
DGrant

Question 23 of 25

Which of the following statements is false?

AThe average thickness of the earth's crust is about 33 km.
BThe thickness of the earth's crust is greater in the continental part whereas it is shallower in the oceanic part.
CThe oceanic crust is mainly composed of granite rocks.
DThe density of continental crust is higher than that of oceanic crust.

Question 24 of 25

The correct descending order of the amount of different elements found in the earth's crust is –

AOxygen, silicon, iron, aluminum
BSilicon, oxygen, aluminum, iron
CIron, silicon, oxygen, aluminum
DOxygen, silicon, aluminum, iron

Question 25 of 25

The layer of the Earth made up of mixed metals and silicates is called

ACiel
BSaima
Cmantle
DNife