Microorganisms related to food

Microorganisms related to food:

Bacteria in Yogurt

Yogurt is made by boiling milk and adding special bacteria on it. Then, it is kept warm for several hours. The reason why it is kept warm for several hours is so that the bacteria multiplies and turns the sugar in the milk into acid. The acid makes the milk go thick and also stops the breeding of bacteria. Interesting, right? I had just know this and was very fascinated with this yogurt-making process so I wanted to tell all of you, my readers, about it. Did you know? The bacteria in the yogurt is good for our digestive system!

Yeast in Bread

A microorganism that is already well-known as is used in many bakeries called 'yeast' is added to the dough to help the bread rise. The yeast turns the sugar in the dough into carbon-dioxide. As the dough is heated, the bubbles carbon-dioxide get bigger and then the bread rises. I know that yeast helps to make the dough rise before, but I have never known why and how it rises! Very interesting!

Uncooked food

Uncooked food (especially meat) sometimes contain bacteria that is called, 'Salmonella'. Salmonella is not good for us, but usually, this bacteria will be killed after being cooked. If you eat food that has not cooked properly, the 'Salmonella' may survive and cause your gut to multiply and make you very ill if you eat it. Better be careful! Always take care of your health so that you can keep on reading my posts on this blog. :)

Machines (Continued)

More information about Machines:

Complex machines:

Bicycle - Consists of three simple machines: Lever, Gear, Wheel & axle

Scissors - Consists of two simple machines: Lever and Wedge

Hand Drill -  Screw, Wedge, Wheel & axle

Machines -Science

1. Machines are tools that help us do work faster and easier. For example:

a)  help us carry heavy things
b)  wash our clothes
c)  travel faster from one place to another

With these machines in our life, our time and energy is saved. We use many machines in our daily life. Examples:

Eclipse -Year 6 Topic

An eclipse occurs due to the rotation of the moon around the sun. The Moon is a cold and rocky planet  which is around 2,160 miles  in diameter. It has no light of its own but it receives light from the sun.That is the reason why an eclipse occurs- because the earth blocks the moon from receiving the sunlight from the sun. As the moon moves around our planet Earth, it causes different phases of the moon to occur at different times: 

• New Moon > New Crescent > First Quarter > Waxing Gibbous> Full Moon >
  Waning Gibbous > Last Quarter > Old Crescent > New Moon 

Mind map for 'Eclipse':

When an eclipse of the Moon occurs, the people who are are experiencing night time are the people who will see the eclipse. Not everyone in Earth can see it.