The Dirtiest place in the School

Hypothesis:I think the bathroom taps are the dirtiest place because people clean there hands and the have to turn it on.

Locations:
Rubbish bins  Food room bench         door handles   inside toilet door
toilet seat       under tables                  table tops       outside toilet door
gym floor        library book                 glass windows  General air
under J block  chrome book keyboard  Bathroom tap  our hands Drinking fountains

Equipment: Agar dishes,cotton buds, cellotape

Method: Take cotton bud and wipe it firmly over the surface.
wipe cotton bud across the agar jelly carefully.
seal the agar plate with cellotape and write the location on the tape
store upside down in a dark location

                                                                 what we found?
                     The cleanest place in the school was Mr Stock door handle because it didn't have any bacteria on it.
the dirtiest place in the school was Miss Richardson laptop because she never cleans it and it had lots of bacteria.
I was surprised by Miss Richardson's laptop being the most dirtiest place in the school.

How to make Biltong

Aim:

I want to find how to make Biltong

Method:

 Steak Spices for flavouring (Like ginger and  garlic)

A small handful of Salt.

String.

Sharp knife.

Bowl.

Making the Biltong

Cut the raw meat into thin strips about 1-2cm wide.

Put the strips of meat into a bowl.

Add the salt and spices into the bowl.

Rub all the ingredients into the meat.

Tie a piece of string around the end of each strip.

Tie the other onto a drying line.

Leave the meat to dry for one week.

Result:

Disucssion:

making Ginger Beer

Aim
 Our goal is to find out how to make Ginger Beer.

How to make the ginger beer

Step 1: Peel ginger.

Step 2: Put the ginger in the blender with water- blend for 15-20 seconds.

Step 3: Strain and  add the sugar and cloves-then refrigerate the ginger beer.

Step 4: Finished!

Result

This is what it looks like in the bottom

When I smelled the ginger beer it smells like rotten bread.

when I tasted the ginger beer it tasked I eat rotten bread and it stayed in my mouth till i eat something

When Mr stock shook the bottle it fizz up and I saw bubbles go up.

Discussion

yeast is a type fungus/mould

bread experiment, Growing mould

questions-
what causes bread to go of/rot
Hypothesis-being left in air,being moist/damp/humid being left in a warm place

Equipment-half i slice of bread.
                  sandwich bag(per slice)
                  half a paper towel
                  10mls of water





What are the best conditions for growing mold?
I think the best condition for growing mold is water and no air or light because it has more water because the sun can not dry up the water.

mold that is red is not dangers
mold that is green is not as dangers as the black but can cores dangers things
black is the most dangers it cores all sorts of things

science badge Question

Question-How does milk become yoghurt.

Hypothesis- put cold milk and whisk the milk and cream together.

materials- Milk, yoghurt 

Acidophiles                                                                          
                                                                                           
Its a bacteria used to make yoghurt                                        
It helps the intestines by cleaning                                        

what temp. does bacteria reproduce? 37 C
What temp is a fridge? 4-6 C
what is the healthy temp of the human body? 37 c                        

                                                               method 

In a beaker add 150mls of trim milk and 2tsps of acidophilus youghurt. stir to mix. leave out over night repeat with cream and blue(full)milk

Observations- trim milk is normal and whiter then the others.

                    -blue milk whiter then cream and a bit bubbly.

                    -Cream look yellow and has more in it.

blue Milk-

-what does look smell like?it looks like/smell like? It looks like milk but smells like nothing

-what happened to change it? bacteria  reproduced, fed of the sugar in the milk,Trim milk made it thinner yoghurt than blue milk or cream because it has less sugar 

-was my hypothesis right/or wrong? wrong,why because I did how to male it 

science badge Question

Question-How does milk become yoghurt.

Hypothesis- put cold milk and whisk the milk and cream together.

materials- Milk, yoghurt 

Acidophiles                                                                          
                                                                                           
Its a bacteria used to make yoghurt                                        
It helps the intestines by cleaning                                        

what temp. does bacteria reproduce? 37 C
What temp is a fridge? 4-6 C
what is the healthy temp of the human body? 37 c                        

                                                               method 

In a beaker add 150mls of trim milk and 2tsps of acidophilus youghurt. stir to mix. leave out over night repeat with cream and blue(full)milk

Observations- trim milk is normal and whiter then the others.

                    -blue milk whiter then cream and a bit bubbly.

                    -Cream look yellow and has more in it.

blue Milk-

-what does look smell like?it looks like/smell like? It looks like milk but smells like nothing

-what happened to change it? bacteria  reproduced, fed of the sugar in the milk,Trim milk made it thinner yoghurt than blue milk or cream because it has less sugar 

-was my hypothesis right/or wrong? wrong,why because I did how to male it 

hands on fire

Aim:
I  want to safely but my hands on fire.

Equipment:
water
soap(detergent)
Lighter
safety glasses.


method:

1.tie hair up to be safe and

2.wear safety glasses.

3.roll up your top as high as you can

wet your arms so the fire doesn't hurt you.

to stop the fire put  your hands out 

don't put your hands down