Moorlands Primary School


What are germs, bacteria and viruses? Explain that they can sometimes cause illnesses. They can pass on from one person to another therefore it is important to have good hygiene routines.


Watch the story germs on you tube.


How can we reduce the spread of bacteria and viruses? We are responsible for helping to stop the spread of germs that negatively affect their own and others health. Where or when is it especially important to keep good hygiene standards?


Complete the germ experiment. See instructions below.

What You Will Need

Shallow bowl or plate



Dish Soap


Dishwashing soap and a paper plate with water and black pepper.

Fill the bowl or plate with water (until it reaches about 1 inch).

Sprinkle pepper evenly across the surface of the water.

Stick your finger (without any soap) in the water.

Stick your finger in a small amount of dish soap (you can also use a Q-tip or toothpick).

Predict what will happen once you stick your soapy finger into the water.

Stick your soapy finger into the water

The Science Behind It

The pepper floats on the water because it is less dense or lighter than the water. Remember the pepper is representing our germs in this experiment. Without any soap on your finger the germs (or pepper) don’t move at all. However, germs do not like soap. The soap is able to surround the germs and take them off of your hands and wash them right down the drain! This is why the pepper ran away from the soap on your finger!