Why do P waves change direction while passing through the outer core?
Answer and explanation
Correct answer: Due to refraction
When P waves enter the outer core, their speed changes because the properties of the medium change sharply. This bends their path, and the bending is called refraction. Reflection would mean that the waves bounce back, whereas here their direction mainly changes while travelling through the new medium. Exam tip: P waves can travel through the liquid outer core, but their speed and direction change.
Frequently asked questions
What is the correct answer to this question?
Due to refraction
Why is this the correct answer?
When P waves enter the outer core, their speed changes because the properties of the medium change sharply. This bends their path, and the bending is called refraction. Reflection would mean that the waves bounce back, whereas here their direction mainly changes while travelling through the new medium. Exam tip: P waves can travel through the liquid outer core, but their speed and direction change.
Which subject and chapter does this question cover?
This is a Class 11 Home Science question. Chapter: Earth Science Foundations. Topic: Earth's Interior and Seismic Waves.
