What experiments can you do with bacteria?

More Bacteria Experiment Ideas

Mouthwash. Swab your teeth and gums and see how well toothpaste or mouthwash work against the plaque-causing bacteria on your teeth.
Dog’s mouth: Have you heard people say that dogs’ mouths are cleaner than humans’?
Band-aid.
Water bottle.
Shoes.
Toothbrush.
Makeup.

How do you make agar at home?

What to do:

Pour the water into the saucepan and bring to the boil.
Add beef stock powder, sugar and gelatin to the boiling water and stir for a minute until all the ingredients have dissolved.
Cool your new agar mixture slightly for 10 minutes.

What do you swab for a petri dish?

Dampen a cotton swab and roll it in your fingers as you pull it across the surface of your choice. NOTE: You might want to collect a sample from a computer keyboard on half of the Petri dish and leave the other half for the test in Steps 8/9. Remember, you MUST use clean cotton swabs for EACH sample.

What can I use instead of petri dishes?

For containers, you can use foil muffin tins, clear plastic cups covered with plastic baggies, clear Tupperware with lids, or real petri dishes.

Why do bacteria grow on agar?

Agar, which is a polysaccharide derived from red seaweed (Rhodophyceae) is preferred because it is an inert, non-nutritive substance. The agar provides a solid growth surface for the bacteria, upon which bacteria reproduce until the distinctive lumps of cells that we call colonies form.

What are the top 10 best science fair projects?

Making of biogas plant

Working Model of Heart Working Model of Heart This is the 2nd most popular science project on our list which is related to biology.

Working Model of science project “wind turbine” Working Model of science project “wind turbine” Using a few common things,you can make a working wind turbine.

What are some of the best science fair projects?

With this science fair experiment,you can learn what factors affect melting ice.

Try this magic milk experiment for an easy science fair project that younger students can accomplish.

How much sun does a seed need to sprout?

Build your own water clock and see how well you can get it to measure time.

Are Germs a good science fair project?

Yes, it is gross and cool and fascinating, but it doesn’t meet the requirements of a science fair project. If you want to do a science fair project about germs, you have to add a variable, or something that changes in the experiment. In the Growing Bacteria activity described above, adding an anti-bacterial hand sanitizer is a variable.

What are some good ideas for science fair projects?

Some good ideas for science fair projects include recording the effects of different foods on the human heart rate, observing the influence of phrasing questions differently on the answers they elicit, paper airplane engineering, coin toss probabilities and an investigation of platonic solids. Science fair projects can be conducted within virtually any branch of science, including biology