HARD
9th CBSE
IMPORTANT
Earn 100

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

Important Questions on Practice Paper 2

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.
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 36
Name the plant tissue associated with the conduction of food in plants?
EASY
9th CBSE
IMPORTANT
Together with Science Class 9>Chapter 17 - Practice Paper 2>2; PRACTICE PAPER>Q 36
Write four components of phloem.