Explore topic-wise MCQs in Grade8.

This section includes 219 Mcqs, each offering curated multiple-choice questions to sharpen your Grade8 knowledge and support exam preparation. Choose a topic below to get started.

51.

The sides of the acid lava volcanic cones are

A. narrow
B. wide
C. steep
D. shallow
Answer» D. shallow
52.

Some of the tops of underwater volcanoes have emerged out of the sea to form

A. ice lands
B. islands
C. small cliffs
D. overwater stations
Answer» C. small cliffs
53.

When an oceanic plate sub ducts beneath a continental plate to melt into the mantle is known as

A. Underwater volcanism
B. Volcanism at Destructive plate boundary
C. Volcanism at hotspot
D. Earthquake Volcanism
Answer» C. Volcanism at hotspot
54.

A passageway that allows he magma to flow from vent to the crater is known as

A. Vent
B. Cone
C. Pipe
D. Crater
Answer» D. Crater
55.

These rising columns of magma are found in fixed locations deep within the

A. crust
B. mantle
C. outer core
D. inner core
Answer» C. outer core
56.

The number of classifications of volcanoes is

A. three
B. six
C. nine
D. twelve
Answer» B. six
57.

Repeated eruptions of lava through the cracks over time build up layers upon layers of volcanic materials to form a

A. hill
B. ridge
C. mountain
D. volcano
Answer» E.
58.

Lava that contains high amounts of iron and magnesium, but low amount of silica is known as

A. Acid Lava
B. Basic Lava
C. Composite Lava
D. Component Lava
Answer» C. Composite Lava
59.

An example of subduction is the collision of

A. Arabian and Eurasian Plate
B. Persian and Arabian Plate
C. Indo-Australian Plate and American Plate
D. South American and Nazca Plate
Answer» E.
60.

The Indo-Australian Plate collided with the Eurasian Plate to form the mountains, now known as

A. Karakorum Range
B. Hindu Kush Range
C. Himalayas Range
D. Mount Everest Range
Answer» D. Mount Everest Range
61.

New crusts are formed at the

A. constructive plate boundary
B. abstractive plate boundary
C. destructive plate boundary
D. seductive plate boundary
Answer» B. abstractive plate boundary
62.

The two continents that will move further apart due to the Divergent Movement of African and American Plates are

A. Africa and Europe
B. America and Africa
C. Asia and Africa
D. America and Australia
Answer» C. Asia and Africa
63.

The outermost layer of the Earth is the

A. crust
B. mantle
C. core
D. troposphere
Answer» B. mantle
64.

The higher density of Oceanic Plates is due to

A. their huge size
B. their thickness
C. heavier elements in them
D. metalloids present in them
Answer» D. metalloids present in them
65.

It is a theory that describe how the Earth's crust is made up of

A. rocks
B. iron
C. plates
D. metalloids
Answer» D. metalloids
66.

The Earth's crust is made up of several

A. minor plates
B. major and minor plates
C. major plates
D. layers
Answer» C. major plates
67.

The Earth's Internal Structure is made up of

A. two zones
B. three zones
C. five zones
D. seven zones
Answer» C. five zones
68.

When plates move away from each other, they

A. converge
B. diverge
C. collapse
D. form vacuum
Answer» C. collapse
69.

The Transform Plate Movement is seen in a state of America known as

A. Mississippi
B. Alabama
C. Texas
D. California
Answer» E.
70.

The core of the Earth is the

A. outermost layer
B. innermost zone
C. middle zone
D. atmosphere over the layers
Answer» C. middle zone
71.

The crust is mainly made up of

A. nickel
B. rocks
C. soil and sand
D. iron
Answer» C. soil and sand
72.

Nazca plate is a/an

A. Oceanic Plate
B. Continental Plate
C. Aquatic Plate
D. Mantle Plate
Answer» B. Continental Plate
73.

The sliding past of two Crustal Plates in opposite direction is known as

A. Convergent Plate Movement
B. Divergent Plate Movement
C. Transform Plate Movement
D. Boundary Plate Movement
Answer» D. Boundary Plate Movement
74.

Other than Continental Plates, the other type of Crustal Plates is

A. Oceanic Plates
B. Terrestrial Plates
C. Aquatic Plates
D. Antarctic Plates
Answer» B. Terrestrial Plates
75.

Learning the Internal Structure of Earth will give us a greater understanding of

A. crust
B. mantle
C. plate tectonics
D. core
Answer» D. core
76.

Both Continental and Oceanic Plates rest upon the

A. crust
B. mantle
C. core
D. atmosphere
Answer» C. core
77.

The density of the elements present in the Oceanic Plates is

A. equal to 3
B. less than 3
C. more than 3
D. more than 30
Answer» D. more than 30
78.

The place where the plates move apart is filled with

A. air
B. vacuum
C. rocks
D. magma
Answer» E.
79.

The boundary where the plates meet is called a/an

A. obstructive plate boundary
B. constructive plate boundary
C. destructive plate boundary
D. subductive plate boundary
Answer» D. subductive plate boundary
80.

Crustal Plates move in

A. two ways
B. three ways
C. four ways
D. five ways
Answer» C. four ways
81.

The divergence is cause because of the

A. convection current in the crust
B. convection current in the core
C. convection current in the mantle
D. blasts in the core
Answer» D. blasts in the core
82.

The land areas beneath the seas and oceans are known as

A. Oceanic Plates
B. Terrestrial Plates
C. Aquatic Plates
D. Continental Plates
Answer» B. Terrestrial Plates
83.

When the collision of Oceanic and Continental Plates takes place, the Continental Plate is pushed towards the

A. mantle
B. core
C. crust
D. ocean
Answer» D. ocean
84.

The number of types of crustal plates is

A. one
B. two
C. three
D. four
Answer» C. three
85.

The magma cools to form

A. sea beds only
B. crustal rocks only
C. crustal rocks and sea floors
D. rocks to support land and water
Answer» D. rocks to support land and water
86.

Scientists believe that the mantle is made up of

A. iron
B. rocks
C. sand
D. zinc
Answer» C. sand
87.

The place where two crustal plates meet is called the

A. tectonic
B. plate
C. convergent boundary
D. divergent boundary
Answer» C. convergent boundary
88.

The plates made up of continents and parts of oceans are known as

A. Oceanic Plates
B. Terrestrial Plates
C. Continental Plates
D. Aquatic Plates
Answer» D. Aquatic Plates
89.

When an Oceanic Plate collides with a Continental Plate, the Continental Plate is forced

A. upwards
B. into it
C. downwards
D. backwards
Answer» B. into it
90.

The divergence of these two plates occur on the oceanic beds of the

A. Atlantic Ocean
B. Pacific Ocean
C. Arctic Ocean
D. Indian Ocean
Answer» B. Pacific Ocean
91.

The boundary where Crustal Plate past each other is called the

A. constructive plate boundary
B. destructive plate boundary
C. active plate boundary
D. passive plate boundary
Answer» E.
92.

Plate Tectonics is the study of the changes that are taking place in the Earth's

A. Core
B. Mantle
C. Crust
D. Atmosphere
Answer» D. Atmosphere
93.

Unlike convergent and divergent plate boundaries, there is no construction or destruction in

A. constructive plate boundary
B. destructive plate boundary
C. active plate boundary
D. passive plate boundary
Answer» E.
94.

The greater the magnitude, the

A. lesser the amount of energy released
B. greater the amount of energy released
C. lesser the amount of energy absorbed
D. greater the amount of energy absorbed
Answer» C. lesser the amount of energy absorbed
95.

The earthquake is not noticeable up to the scale of

A. 3
B. 4
C. 5
D. 2
Answer» B. 4
96.

At intensity level of '6'

A. people don't feel earthquake
B. poor buildings collapse
C. building and bridges collapse
D. people feel the tremor and windows rattle
Answer» C. building and bridges collapse
97.

The magnitude of the earthquake can be measured using

A. quake meter
B. quake graph
C. seismograph
D. typanicgraph
Answer» D. typanicgraph
98.

Earthquakes usually occur at the boundary of

A. crustal plates
B. mantle plates
C. coral plate
D. volcanic beds
Answer» B. mantle plates
99.

Furniture may move and people may run outside the houses at the scale of

A. 3
B. 4
C. 5
D. 2
Answer» D. 2
100.

At the intensity level of '1'

A. people don't feel earthquake
B. poor buildings collapse
C. building and bridges collapse
D. people feel the tremor and windows rattle
Answer» B. poor buildings collapse