Engineering Geology Mcqs

Q:

Type of reef with an annular, circular or semi-circular coral reef surrounding a lagoon is called __________

A) Fringing reefs B) Barrier reefs
C) Atolls D) Deposited reefs
 
Answer & Explanation Answer: C) Atolls

Explanation: An atoll is essentially an annular, circular or semi-circular coral reef surrounding a central body of water that is as usual called a lagoon. In a typical atoll, the ring made of coral deposits may be continuous or discontinuous, more often broken at places.

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Q:

The type of reefs that occur from a distance of shore and have flat-topped ridges are __________

A) Fringing reefs B) Barrier reefs
C) Atolls D) Deposited reefs
 
Answer & Explanation Answer: B) Barrier reefs

Explanation: The barrier reefs are the most common type of reefs and occur at a distance from the shore or the island running in the form of parallel, flat-topped ridges.

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3
Q:

Peculiar type of ridge-like marine deposits that have been formed due to accumulation of dead parts of certain of sea-organisms are called __________

A) Limestone B) Coral reefs
C) Pearl D) Gorges
 
Answer & Explanation Answer: B) Coral reefs

Explanation: Coral reefs are peculiar types of ridge-like marine deposits that have been formed due to accumulation of dead parts of certain of sea-organisms.

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Q:

Charles Darwin classified coral reefs into how many classes?

A) 2 B) 3
C) 4 D) 5
 
Answer & Explanation Answer: B) 3

Explanation: Charles Darwin, who was the first to study and classify the reef deposits recognized the following three types: fringing reefs, barrier reefs and atolls.

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6
Q:

The bodies of seawater moving backwards to sea after having reached and struck the seashore are called __________

A) Oscillatory waves B) Translatory waves
C) Littoral currents D) Rip currents
 
Answer & Explanation Answer: D) Rip currents

Explanation: Rip currents are bodies of seawater moving backwards to sea after having reached and struck the seashore. They often move below the surface of the sea and reach varying distance up to the middle to the sea.

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6
Q:

Bodies of seawater of considerable volume moving along and parallel to the shore are called __________

A) Oscillatory waves B) Translatory waves
C) Littoral currents D) Lateral currents
 
Answer & Explanation Answer: C) Littoral currents

Explanation: Littoral currents are the bodies of seawater of considerable volume moving along and parallel to the shore.

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3
Q:

The type of waves that are characteristic of shallower portions of the sea?

A) Oscillatory waves B) Translatory waves
C) Littoral waves D) Lateral waves
 
Answer & Explanation Answer: B) Translatory waves

Explanation: Translatory waves are typically of shallower depths in the sea and abound along the seashore. They are commonly produced after the oscillatory waves break and rush forward.

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Q:

The type of waves that are characteristic of deeper portions of the sea?

A) Oscillatory waves B) Translatory waves
C) Littoral waves D) Lateral waves
 
Answer & Explanation Answer: A) Oscillatory waves

Explanation: Oscillatory waves are characteristic of deeper portions of the sea. In such waves, each particle moves in a circular orbit.

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