Page 137 - Viva ICSE Science 5 : E-book
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TERMS TO KNOW
1. Hygiene: The good practices which we adopt to keep clean in order to remain disease
free and healthy
2. Oral hygiene: Taking care of teeth and gums
3. Biodegradable waste: Waste materials that can be easily broken down (decomposed) by
microorganisms into simpler substances
4. Non-biodegradable waste: Waste materials that cannot be decomposed by micro-
organisms and remain on the earth for many years harming the environment
5. Recycling: Treating wastes to get materials that can be reused
QUICK LOOK
1. Unclean and dirty places become favourable space for germs to grow and spread diseases.
2. The good practices which we adopt to keep clean in order to remain disease free and
healthy are called hygiene.
3. We must take bath every day. It removes sweat and dirt from the body.
4. Dirty hair causes itchy scalp, dandruff and attracts lice. Wash hair at least twice a week.
5. Dirt and germs settle easily on nail beds when the nails are long. Trim nails every week.
6. Always wear washed and clean clothes. Clean the cupboards regularly.
7. Wash hands before and after eating. Drinking water should be boiled or fi ltered.
8. Along with the personal hygiene, cleanliness of our surroundings is also important. Things
in our house should be dusted and cleaned regularly.
9. Waste can be biodegradable or non-biodegradable.
10. Biodegradable wastes can be decomposed by microorganisms into simpler compounds,
whereas non-biodegradable wastes cannot be decomposed.
11. The best way to manage waste is to follow the three R's—Reduce, Reuse and Recycle.
EXERCISES
A. Fill in the blanks.
1. Dirty hair attracts ___________.
2. ___________ removes food particles stuck in between our teeth.
3. Cover mouth and nose with clean handkerchief while ______________.
4. Besides personal hygiene, cleanliness of our ___________ is also important.
5. Diseases that spread from one person to another are called _____________.
6. Malaria, dengue and chikungunya are diseases caused by ___________.
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