UNDERSTANDING
APPLICATION
PROBLEM SOLVING
IBT
RIDDLES
100
What is a natural source of water?
Rain, river.
100
What are the three forms of water?
Liquid (water), gas (water vapor), solid (ice)
100
What will happen if factories dump waste into rivers?
Dead fish / polluted water
100
How much water is in the beaker?
A) 50 ml
B) 250 ml
C) 400 ml
250 ml
100
I have no shape, no color, but all living things need me. Who am I?
Water
200
Name two man-made sources of water.
Well, tube wells.
200
Why is the farmer watering the plants?
plants need water to grow.
200
How can you help birds get water in summer
- Bird
Water Bowl
200
What helps the duck swim in water?
A) Broad beak
B) Webbed feet
C) Long neck
Webbed feet
200
I fall from the sky, but I am not a star. What am I?
Rain
300
The natural source of water is
Rain
300
What should the boy do to save water? 
8
Use a bucket and sponge instead of a hose.
300
Madhuri kept some water in a refrigerator and after some time the water changed into ice. What is this process called?
Freezing
300
Identify the form of water in the picture. 
A) Gas
B) Solid
C) Liquid
Gas
300
Iam frozen, hard, and cold, in winter I am bold. What am I?
Ice (Solid water)
400
Why can’t we drink water directly from the sea or ocean?
Because sea/ocean water is salty and not safe to drink.
400
During cooking, Sam sees steam rising from a boiling pot. What form of water is this?
This is gaseous water, called water vapor or steam.
400
Riya is feeling very thirsty after playing in the sun. What should she drink, and why?
She should drink clean water because it will help her body stay hydrated and healthy.
400
What change of water is happening here?
Condensation
Evaporation
Freezing
Condensation
400
I am wet but I fly, I disappear into the sky. What am I?
Evaporation / Water vapor
500
Why is the sun important for the water cycle?
The sun makes water evaporate and keeps the water cycle going.
500
In summer, puddles of water dry up under the sun. What change is happening to the water?
The water is changing from liquid to gas through evaporation.
500
A boy drinks water from a pond without cleaning it first and gets sick. Why?
The water had germs. Drinking unclean water can make people sick, so water should be clean before drinking.
500
Children throw plastic into a river. How can this affect water and animals?
Plastic can pollute the water and harm fish and other animals living in the river.
500
I rise up high but you cannot hold me in your hand. I float in the air like a ghost. What am I?
Steam / Water vapor (Gas)