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

Question 1 of 25

The "Gutenberg Discontinuity" is between which two layers of the Earth?

Acrust and mantle
Bmantle and core
Cupper and lower mantle
Dinner and outer core

Question 2 of 25

What is the result of folding action?

Acontinental force
Bgeostatic force
Cmountain building forces
Dexogenous forces

Question 3 of 25

What is the rate of increase of temperature with depth as we move from the surface to the earth's crust?

A1 °Cper 165 meters
B1°C per 165 feet
C1°C per 32 meters
D1°C per 32 feet

Question 4 of 25

What type of rocks make up the ocean floor?

AGranite
Bbasalt
Cflaky
DGabbro

Question 5 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 6 of 25

Which of the following statements is true?

ARocks like granite and gneiss are predominant in Sial.
BThe range is mainly composed of rocks like basalt and gabbro.
CThe core is rich in elements like nickel and iron.
DAll of the above

Question 7 of 25

What is the name of the second layer from the top among the three concentric layers of the Earth?

ASial
BLimit
CNife
Dnone of these

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

How many kilometers deep does the lithosphere extend to?

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

Question 10 of 25

"Lithosphere" means -

AEarth's interior
Bthe central part of the Earth
Cupper part of the earth
DEarth's outer crust

Question 11 of 25

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

ACiel
BSaima
Cmantle
DNife

Question 12 of 25

The magnetic substance found at the centre of the Earth is

AGranite
Bbasalt
CNickel
DDiorite

Question 13 of 25

Which of the following statements regarding the mantle is false?

AIts depth ranges from 35 km to 2900 km.
BIts entire part is in plastic state.
C83.5% of the Earth's volume and 67.8% of its mass is the mantle.
DIts density ranges from 3.0 to 5.5.

Question 14 of 25

How much thickness of the lithosphere has been measured on the basis of seismic waves?

A105 km
B100 km
C200 km
D80 km

Question 15 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 16 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 17 of 25

Which elements predominate in the Earth's core?

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

Question 18 of 25

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

ASial
BLimit
CNife
Din none of the

Question 19 of 25

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

APanel distortion
BUncovering
CDeterioration
Dvolcanic

Question 20 of 25

Who divides the geology into Sial, Sima and Nife?

Avan der Graat
BDaily
CHolmes
DSwes

Question 21 of 25

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

ASial
BLimit
CNife
Din none of the

Question 22 of 25

Which of the following elements predominate in the mantle?

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

Question 23 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 24 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 25 of 25

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

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