Tiwari Academy Discussion

Asked: October 28, 2020In: Class 9

What is reverberation? How can it be reduced?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-175 Questions No-15

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

What is loudness of sound? What factors does it depend on?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-175 Questions No-16

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

Explain how bats use ultrasound to catch a prey.

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-175 Questions No-17

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

How is ultrasound used for cleaning?

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-175 Questions No-18

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

Explain the working and application of a sonar.

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-175 Questions No-19

Bhumi Srivastava

Asked: October 28, 2020In: Class 9

Explain how the human ear works.

NCERT Solutions for Class 9 Science Chapter 12 Important NCERT Questions Sound NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-175 Questions No-22

Badri Rawat

Asked: October 28, 2020In: Class 9

State any two conditions essential for good health.

NCERT Solutions for Class 9 Science Chapter 13 Important NCERT Questions Why Do We Fall Ill NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-178 Questions No-1

Badri Rawat

Asked: October 28, 2020In: Class 9

State any two conditions essential for being free of disease.

NCERT Solutions for Class 9 Science Chapter 13 Important NCERT Questions Why Do We Fall Ill NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-178 Questions No-2

Badri Rawat

Asked: October 28, 2020In: Class 9

Are the answers to the above questions necessarily the same or different? Why?

NCERT Solutions for Class 9 Science Chapter 13 Important NCERT Questions Why Do We Fall Ill NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-178 Questions No-3

Badri Rawat

Asked: October 28, 2020In: Class 9

List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor? Why or why not?

NCERT Solutions for Class 9 Science Chapter 13 Important NCERT Questions Why Do We Fall Ill NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-180 Questions No-1

What is reverberation? How can it be reduced?

What is loudness of sound? What factors does it depend on?

Explain how bats use ultrasound to catch a prey.

How is ultrasound used for cleaning?

Explain the working and application of a sonar.

Explain how the human ear works.

State any two conditions essential for good health.

State any two conditions essential for being free of disease.

Are the answers to the above questions necessarily the same or different? Why?

List any three reasons why you would think that you are sick and ought to see a doctor. If only one of these symptoms were present, would you still go to the doctor? Why or why not?

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