Tamil Nadu Primary School इयत्ता ४ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

How will you take care of your heart and kidney?

We can see the internal body parts.

Junk food is good for health.

Do you usually eat your lunch without wasting anything? If you say no, why do you waste?

Can you suggest few ways to reduce food waste in your school and house?

We can avoid food wastage by

How can you reduce the wastage of food in your home?

Fill in the boxes given below with correct answers.

(Liquid, Solid, Melting, Freezing, Cooling, Heating, Gas)

Change of Status in water

Write any two water bodies in your area. ____, ____.

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 _____.