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Downloaded from www.studiestoday.com RYAN INTERNATIONAL SCHOOL, LUDHIANA SESSION: 2014-2015 SCIENCE PRACTICE WORKSHEET CLASS: IV NAME:_____________ GRADE:__________ I.Give one word answer: 1.Tiny organism that can only be seen through a microscope. _______________ 2.Harmful microbes. _______________ 3.Fungi that help in making bread. _______________ 4.Removal of water from any substance. _______________ 5.An unfortunate, unexpected and unintentional incident. _______________ 6.The discolouration of skin caused by pressure. _______________ II.Fill in the blanks: 1.Dysentry is caused by ____________. 2.__________ are plant –like organism that lack chlorophyll. 3.Viruses are always _____________ to us. 4.Wash your hands before and after __________. 5.Medicines should be kept in ___________ bottles. 6.Always cross the road at ___________________. 7.The _________ can be used to extinguish electric fire. III.State TRUE or FALSE: 1.Young children can play with knives. 2.We should follow safety rules at all times. 3.Accidents happen due to carelessness. 4.We should throw things on others. 5.Microbes grow faster in warm and damp places. 6.Protozoa are single celled animals. Downloaded from www.studiestoday.com
Downloaded from www.studiestoday.com IV.Answer the following: 1.Define an accident. ____________________________________________________________________________ ________________________________________________________________________ . 2.What is first aid? ____________________________________________________________________________ ________________________________________________________________________ . 3.Why is milk boiled before use? ____________________________________________________________________________ ________________________________________________________________________ . 4.What first aid should be given to a person having bruise in his hands? ____________________________________________________________________________ ________________________________________________________________________ . 5.Write three ways to protect ourselves from harmful microbes. ____________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ ________________________________________________________________________ . 6.Name four types of microbes and write two diseases for each. ____________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________. Downloaded from www.studiestoday.com