Tamil Nadu Primary School Class 4 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Fill water in an ice tray and keep it in the freezer.
After few hours, take it out. What happened to the water?

What happens to the water in a wet cloth?

Choose the correct answer.

In the water cycle _____

Is water cycle important for farming? _______

Why is water cycle important to human?

List out some other benefits of rain water harvesting.

Discuss with your friends.

Rain water harvesting has an important role to protect our environment.

At temperature below _______ water freezes to form ice.

Which controls the ecological functions of life?

Water is converted into _______ when it is heated

Water droplets Combines to forms _____.

Water cycle increases the availability of _______.

Water cycle controls Earth‛s temperature.

Water becoming water vapour on heating is called evaporation.

Name the processes involved in the water cycle.

What is water cycle? Write any three importances of water cycle.

What is rain water harvesting? List out the advantages of rain water harvesting.

Colour the given picture and write the correct name in the given blanks.

(Precipitation, Evaporation, Condensation, Water storage)

Classify the following.

( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)

Write the percentage of the gases present in air.