ICSE ICSE Class 7 - CISCE Question Bank Solutions for Physics

Differentiate between a high pitch sound and a low pitch sound.

How does a man’s voice differ from a woman’s voice ?

Name the characteristic which differentiates two sounds of the same pitch and same loudness.

You recognize your friend by hearing his voice on a telephone. Explain.

A musician recognizes the musical instrument by hearing the sound produced by it, even without seeing the instrument. Which characteristic of sound makes this possible ?

What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.

Describe an experiment to show the production of sound having low and high pitch.

Name four appliances which work using electricity ?

Why are musical instruments provided with more than one string ?

How can the pitch of sound produced in a piano be changed ?

Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.

List four substances which are good absorbers of sound.

List the measures that you will take when designing a sound-proof room.

Write true or false for a given statement.

The density of water is maximum at 4°C.

Write true or false for a given statement.

The speed 5 ms^-1 is less than 25 km h^-1.

Fill in the blank

 l m³ =..........cm³

 Fill in the blank

Mass = density × _______

Fill in the blank

1 g cm^-3 = _______ kg m^-3.

Fill in the blank

36 km h^-1 = _______ ms^-1.

 Fill in the blank

 Distance travelled d = ________ × time t