ICSE ICSE Class 8 - CISCE Question Bank Solutions

Give reasons for the following A horse and a dog are running with the same speed. Which one of them has more kinetic energy than the other.

A car is moving with a speed of 15 km h^-1 and another identical car is moving with a speed of 30 km h^-1. Compare their kinetic energy.

Which characteristics of sound makes it possible to recognize a person by his voice without seeing him?

How are the electrical appliances connected in a house circuit: in series or in parallel? Give reason.

State the voltage at which electricity is supplied to our houses.

The temperature at which a liquid gets converted into its vapour state is called its

Rapid conversion of water into steam is an example of

Boiling takes place from the

Differentiate between melting point and boiling point, giving atleast one example of each.

Explain the term vaporization.

Explain the terms boiling point.

A liquid can change into vapour state at a fixed temperature.

Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.

State the boiling point of water.

A certain quantity of water is heated from 20°C to 100°C. Its temperature is recorded after each 1 minute. The observations are:

The atmospheric pressure is nearly 10⁵ Pa.

The atmospheric pressure on earth surface is nearly .............. .

The atmospheric pressure at sea level is nearly

Nose bleeding may occur at a high altitude because

What do you mean by atmospheric pressure?