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Consider the following statements:
Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.
Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.
Which of the above statements is/are correct?
- a)A is correct, and R is an appropriate explanation of A.
- b)A is correct, but R is not an appropriate explanation of A.
- c)A is correct, but R is incorrect.
- d)Both A and R are incorrect.
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:Assertion (A): The structure of Ear...
Observing Earth's Structure through Earthquake Waves
Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.
Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.
Explanation:
The Earth's interior structure can be understood by observing the passage of earthquake waves through different layers of the Earth. The waves generated by an earthquake travel through the Earth's interior and are recorded on seismographs placed at different locations on the surface. These waves are of two types - body waves and surface waves.
Body Waves:
Body waves are seismic waves that travel through the Earth's interior. There are two types of body waves: P waves (primary waves) and S waves (secondary waves).
P Waves:
P waves are the fastest seismic waves and can travel through solid, liquid, and gas materials. They arrive at the seismograph station first and can move through the Earth's interior in a straight line.
S Waves:
S waves are slower than P waves and can only travel through solid materials. They arrive at the seismograph station second and move through the Earth's interior in a zigzag pattern.
Surface Waves:
Surface waves are the waves that travel on the Earth's surface. They are slower than body waves but are more destructive. There are two types of surface waves: Love waves and Rayleigh waves.
Love Waves:
Love waves are the fastest surface waves and move the ground from side to side. They are responsible for most of the damage during an earthquake.
Rayleigh Waves:
Rayleigh waves are slower than Love waves and move the ground up and down. They are responsible for the rolling motion felt during an earthquake.
Conclusion:
The assertion is correct. The structure of the Earth can be understood by observing the passage of earthquake waves through different layers of the Earth. The reason is also correct. Some type of earthquake waves, such as S waves, do not travel through liquid material in the Earth's layers. This is because liquids cannot support shear stresses, which are necessary for S waves to propagate. Hence, option (A) is correct, and option (B) is the appropriate explanation of (A).
Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.
Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.
Explanation:
The Earth's interior structure can be understood by observing the passage of earthquake waves through different layers of the Earth. The waves generated by an earthquake travel through the Earth's interior and are recorded on seismographs placed at different locations on the surface. These waves are of two types - body waves and surface waves.
Body Waves:
Body waves are seismic waves that travel through the Earth's interior. There are two types of body waves: P waves (primary waves) and S waves (secondary waves).
P Waves:
P waves are the fastest seismic waves and can travel through solid, liquid, and gas materials. They arrive at the seismograph station first and can move through the Earth's interior in a straight line.
S Waves:
S waves are slower than P waves and can only travel through solid materials. They arrive at the seismograph station second and move through the Earth's interior in a zigzag pattern.
Surface Waves:
Surface waves are the waves that travel on the Earth's surface. They are slower than body waves but are more destructive. There are two types of surface waves: Love waves and Rayleigh waves.
Love Waves:
Love waves are the fastest surface waves and move the ground from side to side. They are responsible for most of the damage during an earthquake.
Rayleigh Waves:
Rayleigh waves are slower than Love waves and move the ground up and down. They are responsible for the rolling motion felt during an earthquake.
Conclusion:
The assertion is correct. The structure of the Earth can be understood by observing the passage of earthquake waves through different layers of the Earth. The reason is also correct. Some type of earthquake waves, such as S waves, do not travel through liquid material in the Earth's layers. This is because liquids cannot support shear stresses, which are necessary for S waves to propagate. Hence, option (A) is correct, and option (B) is the appropriate explanation of (A).
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Community Answer
Consider the following statements:Assertion (A): The structure of Ear...
- There are two types of body waves generated during an earthquake. They are called P- and S-waves.
- An important fact about S-waves is that they can travel only through solid materials. This characteristic of the S-waves is quite important as it has helped scientists to understand the structure of the interior of the Earth.
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Consider the following statements:Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.Which of the above statements is/are correct? a) A is correct, and R is an appropriate explanation of A.b) A is correct, but R is not an appropriate explanation of A.c) A is correct, but R is incorrect.d) Both A and R are incorrect.Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements:Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.Which of the above statements is/are correct? a) A is correct, and R is an appropriate explanation of A.b) A is correct, but R is not an appropriate explanation of A.c) A is correct, but R is incorrect.d) Both A and R are incorrect.Correct answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements:Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.Which of the above statements is/are correct? a) A is correct, and R is an appropriate explanation of A.b) A is correct, but R is not an appropriate explanation of A.c) A is correct, but R is incorrect.d) Both A and R are incorrect.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:Assertion (A): The structure of Earth can be understood by observing the passage of earthquake waves through different layers of earth.Reason (R): Some type of earthquake waves do not travel through liquid material in Earth’s layers.Which of the above statements is/are correct? a) A is correct, and R is an appropriate explanation of A.b) A is correct, but R is not an appropriate explanation of A.c) A is correct, but R is incorrect.d) Both A and R are incorrect.Correct answer is option 'A'. Can you explain this answer?.
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