STD FOUR 2015-2016

SCIENCE HOLIDAY HOMEWORK

(Must be done on separate sheets of paper and

submitted with your name, class and section written

on it)

I DEFINE THE FOLLOWING TERMS

1. Asteroid

2. Constellation

3. Pollination

4. Compost

5. Humidity

6. Camouflage

7. Blubber

8. Balanced diet

II Renu saw droplets of water on her car early in the morning.

Later when the Sun came up, the droplets had disappeared.

a) Name the two processes involved.

b) Explain the processes.

III Collect samples of any three pulses used in daily cooking.(Put

them in small pouches and stick on a A4 sheet). Write their

names and their health benefits.

IV Find out from your parents and grandparents about the

traditional ways of beating the heat during summer. Write

two or three sentences about any two of them.

V COMPOSTING

Refers to making manure using the organic waste.

Collect wastes like vegetable and fruit peels, tea powder etc.

in a small pot and cover it with salt

Observe and record the changes you notice week wise

starting from 1st week of May 2016 till the 1st week of June

2016.