Class 9 Exam  >  Class 9 Videos  >  Science Class 9  >  Speed of sound

Speed of sound Video Lecture | Science Class 9

80 videos|352 docs|97 tests

FAQs on Speed of sound Video Lecture - Science Class 9

1. What is the speed of sound?
Ans. The speed of sound is the distance traveled by a sound wave per unit of time. In dry air at 20 degrees Celsius, the speed of sound is approximately 343 meters per second.
2. How does temperature affect the speed of sound?
Ans. Temperature has a significant impact on the speed of sound. As the temperature increases, the speed of sound also increases. This is because the molecules in warmer air have higher kinetic energy, allowing sound waves to propagate faster.
3. Does the speed of sound differ in different mediums?
Ans. Yes, the speed of sound varies depending on the medium through which it travels. For example, sound travels faster in solids compared to liquids, and faster in liquids compared to gases. This is because the particles in solids are closely packed, allowing sound waves to propagate more efficiently.
4. What factors can affect the speed of sound in air?
Ans. Several factors can influence the speed of sound in air, including temperature, humidity, and atmospheric pressure. Higher temperatures, lower humidity, and higher atmospheric pressure tend to result in faster sound propagation.
5. How does altitude affect the speed of sound?
Ans. Altitude, or the height above sea level, does have an impact on the speed of sound. As altitude increases, the density of the air decreases, which reduces the speed of sound. This means that sound waves travel slower at higher altitudes compared to lower altitudes.
80 videos|352 docs|97 tests
Explore Courses for Class 9 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Download the FREE EduRev App
Track your progress, build streaks, highlight & save important lessons and more!
Related Searches

Previous Year Questions with Solutions

,

Important questions

,

Speed of sound Video Lecture | Science Class 9

,

mock tests for examination

,

Viva Questions

,

pdf

,

shortcuts and tricks

,

Speed of sound Video Lecture | Science Class 9

,

Exam

,

Free

,

Extra Questions

,

Objective type Questions

,

Sample Paper

,

video lectures

,

ppt

,

study material

,

Summary

,

Semester Notes

,

past year papers

,

MCQs

,

practice quizzes

,

Speed of sound Video Lecture | Science Class 9

;