Samantha

Monday, 1 August 2016

Growing Mold

Question>what causes bread to go off
Hypothesis>being left in the air, Being moist/damp/humid,being left in a warm place
Equipment>1/2 slice of bread sandwich bag ( per slice) 1/2 a paper towel 10mls of water
method>

This was some bread I thought that was interesting

what is the best condition for growing mold?

having it in the dark place and with air in the bag and water because the bread soaks up the water and having no light for then the sun will not get the bread hot.

Mold is mold is kind of a good thing because penicillin is good for getting rid of bugs.

what is green mold?

Science Badge Question 7

How does milk become yogurt

Hypothesis> I think milk becomes yogurt because milk thickens if you add cream and mix it up then add fruit then put in the freezer.

Materials> Milk,Yogurt (fresh plain)

Method> In a beaker add 150mls of trim milk and 2tsps of Acidophilus yogurt.stir to mix. leave out over night.Repeat this for the cream and with trim(milk)

observation
trim-When I looked at the trimed milk it looked normal it looked like milk ,With bubbles
cream- When I looked at the cream Ihad a hard look at it and it was a light yellow
blue- When I looked at the blue milk it looked flat ,No bubbles or anything

At what temp does bacteria?
What temp is a fridge?
What is the healthy temp of a human?

The cream one looks like this
The cream smells gross

The blue looks like this

It smells like milk

And the trim looks like this

It smells like yogurt

What happened to change it

The bacteria reproduced

The bacteria fed off the sugar in the milk
The trim milk made a thinner type of yogurt than the others because it has less sugar.

We let the milk stay out for 2 days and then placed the the beakers in the fridge. The results were not very good but it could change.

If we got to do it again I would leave the milk in the fridge for longer.

Tuesday, 26 July 2016

Making Ginger Beer

Aim: I want to find out how to make Ginger Beer.

Method:

I need:

fresh ginger
sugar
1/4 lemons juice per 2 litres water
yeast
water

The recipe i got this from was https://youtu.be/rSBb7bCCbNY

Steps:

1. Wash your hands
2. Wash the lemons
3. squeeze the lemons in a 1/2 a cup then pour it in the plastic container
4. Grate 2 table spoons of ginger
5. add 1/2 a cup of sugar
6. Then add 1/4 of yeast
7. Fill Your bottle up with room temperature or cold water but leave some space from the top so there is space for the yeast to grow
8. Shake well then once you have done that place it in a sunny area

Results:

this is my friends bottle because my bottle is not clear.

It smells like ginger beer and it smells nice

At first it tasted gross but then it tasted just like ginger beer it tasted really nice.

Discussion

What is yeast? A microscopic fungus consisting of single oval cells that reproduce by budding, and capable of converting sugar into alcohol and carbon dioxide.

What did the yeast do in the Ginger Beer? The yeast grew from the sugar.

What are some other good uses of Yeast?

Making bread

What are some other bad uses of Yeast?

Having the yeast on you can cause infections

What are some interesting questions that I would like to find

out about this experiment?

Wednesday, 6 July 2016

Welcome to my very own blog for learning. I look forward to sharing my learning with teachers, my school, my family and friends anywhere.

Tuesday, 21 June 2016

What I am doing in science

Benjamin Franklin

In 1752. It was on a dark afternoon in Philadelphia. Benjamin Franklin a 46 year-old man who decided to fly a kite. With some help from his son William. They attached his kite to a silk string, he tied an old iron key at the end. Then they tied a thin metal wire from the key and inserted the wire into a Leyden jar.

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That is a container for storing an electrical charge ,Finally as the sky darkened and a thunderstorm approached,

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He attached a long piece of silk ribbon to the key. Holding onto the kite by the silk ribbon, when the kite flew up into the air, He retreated into a barn so that he wouldn’t get wet. The thunder storm clouds passed over Franklin's kite.The negative charges in the cloud passed onto his kite down the wet silk string, to the key, and into the jar. Ben however, was unaffected by the negative charges because he was holding the dry silk ribbon, insulating him from the charges on the key. When he moved his free hand near the iron key,

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He received a shock. Why? Because the negative charges in the key were so strongly attracted to the positive charges in his body, a spark jumped from the key to his hand.
or The electricity struck the string of the kite because of the key the electricity reacts to metal and stikes the key then the lighting runs down the line.