Science – Tuesday 30th

LESSON 2 – TUESDAY

LI: To explore Bacteria and what they are

So that I know how they can be grouped.

Bacteria

Today, we are going to look at the Microorganism: Bacteria. They eat, move around, reproduce and many other things like larger living things. They are filled with fluid, and may have threadlike structures to move themselves, like a tail. Here are some shapes of bacteria:

Screenshot 2020-06-25 at 12.12.16Discuss: Where do you think Bacteria grows and where can you find it?

Bacteria grow where?

  • Bacteria can be found almost everywhere!
  • Bacteria live on or in just about every material and place on Earth, from soil to water to air, and from your body to the North Pole to the Sahara Desert.
  • Many types can survive below freezing temperature (0°C)., and some types can survive above boiling point (100°C).
  • Screenshot 2020-06-25 at 12.12.21
Is Bacteria good or bad?

Bacteria is good because:

A lot of bacteria that live in our intestines helps us break down food that we eat into stuff that we can digest. These bacteria are a friendly, food digesting army.

Good bacteria can be found in foods such as yoghurt and cheese, in the soil to help plants grow and living on or inside our bodies. They fight the bad bacteria for us and mostly live inside our digestive systems. You can also drink things like this:

Screenshot 2020-06-25 at 12.12.27

This contains ‘good bacteria’ which some people drink to help them have a healthy digestive system. Keep an eye out when you go to the shops!

Bacteria is harmful because:

It can make us sick. They can infect throats which give you a sore throat, or they can infect your lungs which will make you cough.

Lots of them live on you, but don’t worry, almost all of them are good for you!  Each square centimetre of your skin has about 100,000 bacteria on it.

Screenshot 2020-06-25 at 12.12.32

Activity:

Split your page into 4 sections/headings. You will write about what you have learnt about Bacteria from today’s lesson:

  • What Bacteria is
  • Characteristics
  • Why they are good
  • Why they can be harmful

Support:

Fill in the missing words. Bacteria can be _________ and bad. Some good Bacteria is good for our _________ system and some people drink things which contain good Bacteria. Bacteria also lives in _________ which helps plants to grow. However, some _____ bacteria can make us sick. It can give us a _______ throat and effect our lungs which make us __________.

EXT: If you could go back in time, what would you tell people about the Microorganisms and how you can prevent diseases and infections from being spread?

 FUN FACT:

Bacteria has been on the planet for more than 3.5 billion years old, making them the oldest known life-form on earth.

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