How to avoid spreading harmful microorganisms - …



Life ScienceName:______________________Class:_______________________Date:_______________________Spread of Infection466399272391-1009650180975Spread of Infection Pre- Reading Activity-409574486410Can you circle 9 things that the students in this cooking class should not be doing and why?-914400-600075Reading Activity What are microorganisms?Microorganisms are very tiny living things. They are so small that you need a microscope to see them.Microorganisms are all around us, in the air, in our bodies and in water. Some microorganisms are harmful to us, but others are helpful to us.There are three types of microorganism:virusesbacteriafungiHarmful microorganismsMicroorganisms that cause diseases are often called germs.Some diseases, like chickenpox, cold, cough, are caused by viruses. Diseases caused by viruses usually spread easily from one person to another. Washing your hands is one of the best ways to stop harmful microbes from spreading and preventing us from getting sick.Uncooked foods (especially meat) can contain bacteria. The bacteria are killed when the food is cooked properly. But if you eat food that has not been cooked properly, the bacteria may survive and make you feel very ill.Bacteria left in your mouth by not brushing your teeth properly can cause a tooth infection. Bacteria left in your mouth could also cause an infection in your ear.Mould is a type of microorganism that grows on decaying food. It can make you ill if you eat it.26193752190754695825177803076575165100How to avoid spreading harmful microorganismsYou can avoid spreading harmful microorganisms by:Washing your hands before eating, after preparing food and after using the toilet. Washing your hands with hot water and soap will kill any bacteria on them.Covering your mouth when you cough or sneeze. By covering your mouth, you will stop harmful microorganisms from spreading through the air to other people.Keeping away from other people if you have an illness that is easily spread. By keeping away from other people, you will stop the spread of the harmful organisms.Avoiding food that is not fresh or has not been cooked properly. Food that is not fresh or has not been cooked properly may contain harmful microorganisms.Keeping uncooked meat separate from other food in the fridge. Uncooked meat may contain harmful bacteria that could transfer to other food.638175457200Types of Microorganisms4114800-323850-723900-390525Post Reading Activity Activity 1Copy the Keywords from the text above 3 times, they are in bold.Key words123456789101628775181610Activity 2Answer the following questions based on the reading passage. Use the text above to help you:Why is it important to wash hands before eating? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________2. Why do we store food in a fridge? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________3. How could we prevent the spread of the harmful bacteria? ________________________________________________________________________________________________________________________________________________________________________________________________________________________Activity 3:Draw 3 different types of microorganisms and write their names:Activity 4 Choose the best answer: Most microorganisms cannot be seen without a ...TelescopePeriscopeMicroscopeWhich of these is NOT true about microorganisms?They are all harmfulThey feed and growThey reproduceWhy should cooked and uncooked foods be stored separately?Because bacteria only like cooked foodBecause bacteria only like uncooked foodTo stop bacteria spreading from one to the otherWhich of these microorganisms is harmful?YeastBacteria in yoghurtFruit mouldBacteria and viruses are both types of microorganisms. Which is smaller?BacteriaVirusesThey are both the same sizeActivity 5Children made a poster about things that can prevent plete the poster below by writing the TWO correct phrases from the list.3619500134620Washing hands Sneezing into your handkerchief Not smokingEating less sugarTaking exerciseOne has been done for you.-74295133020 ................
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