What is the full form of SONAR?

Important Questions on Practice Paper 2

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 34

Explain the principle used in SONAR.

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 34

Explain with a diagram how SONAR is used to measure depth of an ocean

EASY

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 34

List two more applications of SONAR.

EASY

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 34

State a condition for an echo to be heard.

EASY

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 34

Bats cannot see, then how do they catch prey?

EASY

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 34

Explain the role of curved ceilings and sound boards in concert halls.

MEDIUM

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 35

Write full form of AIDS. What is its causative agent? How does AIDS spread? How can it be prevented?

HARD

9th CBSE

IMPORTANT

Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 36

What is a nervous tissue? What is its functions? Explain the structure of a neuron with a diagram.