Easy Elementary Science Projects - Doing Tests With Yeast [sciencetechnology-center.blogspot.com]

Easy Elementary Science Projects - Doing Tests With Yeast [sciencetechnology-center.blogspot.com]

In this easy elementary science project we are going to experiment with yeast. I wonder if you know what yeast is? Well, it is a type of fungus that lives on the skins of many fruits. A spoonful of yeast contains millions of little single-celled organisms (it is very simple organisms.) These organisms work like tiny factories to by taking sugar and making alcohol and carbon dioxide gas. This is the process that turns the mixture of grain and water into beer and the bubbles it produces are used to make bread light and fluffy. We are going to have a look at the conditions that are necessary for the yeast to grow.

This is one of our easy elementary science projects where adult supervision is vital as we are going to use hot water. Ask an adult to help you with the boiling of the water.

The purpose of this science project is to find the ideal conditions for yeast to grow in.

What you need for this experiment:

A kettle A measuring jug Water 4 Small glass jars Dried yeast 2 Heatproof bowls A teaspoon Dried yeast granules Clear film 3 Elastic bands 4 Colored stickers, green, red, blue and yellow Sugar Ice cubes Scissors Pen

How to do this easy elementary science project:

Fill the kettle about half full with water. Boil the water to kill any organisms that might interfere with the working of the yeast. Now place the stickers on your glass jars. For safety's sake also mark the stickers a (green), b (red), c (blue) and d (yellow). With a teaspoon, place a level teaspoon of yeast into each jar. Now you place the same amount of sugar in each jar. Place the jar with the yellow dot (d) away in a warm place. In the remaining jars, pour about 2/3 cup of the cooled, boiled water into each of the remaining bottles. Cut a piece of clear film for each of the remaining 3 jars that is about twice the width of the jars. Stretch one piece over the neck of each of the remaining jars and secure it with an elastic band. Place the jar with the green dot (a) in a warm place. Pace the jar with the blue dot (c) in one of the bowls and put some cold water and ice in this jar to keep it cold. If the ice starts to melt, add more ice to keep the water cold all the time. Now you place the jar with the red dot (b) in the other jar and pour some very hot water in the bowl. Ask and adult to help you with this. The water must be very hot but, not boiling as that may cause the jar to break. If the water start to cool down, add extra hot water to keep it hot all the time. Check on your jars regularly for the next 2 hours, keeping the conditions for each jar as it started. Make meticulous notes of everything that happens. Can you explain why it happens? How do you think this knowledge can be used in baking bread?

If you did this easy elementary science project correctly, the following will happen:

The yeast in the jar that was kept in the hot water (red, b) lies in a cloudy layer at the bottom of the jar as the yeast was killed by the hot water. In the jar that was kept in the cold water (blue, c) there is only a little froth at the top of the jar as the cold slowed down the yeast. (I wonder if you can think how this information can be of some use to a baker.) In the jar that was kept in a warm place (green, a) the yeast has fed on the sugar and water and the resulting carbon dioxide should be pushing up the clear film already. The yeast in the last jar (yellow, d) shows no sign of any activity as the dry yeast is hibernating and will only become active in the presence of water, sugar and warmth. (Not too hot, because we have already established that overheating will cause the yeast to die.)

This easy elementary project is proofs that even doing the simplest experiments can teach us all something of value. How do you think what we learned today can be of practical use to us? In fact it has been used for years in the process of baking bread, making wine and making beer.

Find More Easy Elementary Science Projects - Doing Tests With Yeast Issues

Question by Lever: If medical science found ways to erase your memories, how would that affect the status of your spirit/soul? They've recently announced that they could have drugs that could literally erase painful memories. This could potentially mean that they could come up with drugs that literally erase your entire memory and your entire "self." Basically, if you have an invsibile spirit/soul inside of you that reflects who you are, but then that gets changed in the body, then who is the spirit really? How will that spirit be judged, if a person can literally change who they are in life? Or is science able to create a "new" spirit/soul? Best answer for If medical science found ways to erase your memories, how would that affect the status of your spirit/soul?:

Answer by Reoriented
Trauma does this already. You are you. The divisions between mind, soul and body are arbitrary.

Answer by elclinch
so memories = soul? Think again einsteinard

Answer by No Chance Without Bandwidth
I would want no part of it. To quote Kirk in Star Trek V (yes I'm a geek): "I need my pain!"

Answer by No Chance Without Ninjas
There's something called amnesia that does this.

Answer by SkeetSkeetShooter
It wouldn't We only exist i n the now, past and future do not exist

Answer by siuloir
There is no physical evidence that such a thing as a soul exists. What is you is the result of a chemical process in your brain where your memories are stored and when you die your brain dies and your memories and your mind with it.

Answer by Q&A Queen
You'd be a different "soul". Why, because we ARE our souls. The original hebrew word is "ne'phesh" which means "living/breathing being", not some spiritual part of us that lives on after we die. Ezekiel 18:4 - "the soul that is sinning, it itself will die.

Answer by Sumith B
We humans are moving in to more deep and deeper, more in to unknown territories......

Answer by turtle30cshell
If the Jesus is Lord of your life, nothing changes that. Memory may go but the inner heart does not change. God knows and sees all. Psalms 139:1-24 KJV (1) To the chief Musician, A Psalm of David. O LORD, thou hast searched me, and known me. (2) Thou knowest my downsitting and mine uprising, thou understandest my thought afar off. (3) Thou compassest my path and my lying down, and art acquainted with all my ways. (4) For there is not a word in my tongue, but, lo, O LORD, thou knowest it altogether. (5) Thou hast beset me behind and before, and laid thine hand upon me. (6) Such knowledge is too wonderful for me; it is high, I cannot attain unto it. (7) Whither shall I go from thy spirit? or whither shall I flee from thy presence? (8) If I ascend up into heaven, thou art there: if I make my bed in hell, behold, thou art there. (9) If I take the wings of the morning, and dwell in the uttermost parts of the sea; (10) Even there shall thy hand lead me, and thy right hand shall hold me. (11) If I say, Surely the darkness shall cover me; even the night shall be light about me. (12) Yea, the darkness hideth not from thee; but the night shineth as the day: the darkness and the light are both alike to thee. (13) For thou hast possessed my reins: thou hast covered me in my mother's womb. (14) I will praise thee; for I am fearfully and wonderfully made: marvellous are thy works; and that my soul knoweth right well. (15) My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth. (16) Thine eyes did see my substance, yet being unperfect; and in thy book all my members were written, which in continuance were fashioned, when as yet there was none of them. (17) How precious also are thy thoughts unto me, O God! how great is the sum of them! (18) If I should count them, they are more in number than the sand: when I awake, I am still with thee. (19) Surely thou wilt slay the wicked, O God: depart from me therefore, ye bloody men. (20) For they speak against thee wickedly, and thine enemies take thy name in vain. (21) Do not I hate them, O LORD, that hate thee? and am not I grieved with those that rise up against thee? (22) I hate them with perfect hatred: I count them mine enemies. (23) Search me, O God, and know my heart: try me, and know my thoughts: (24) And see if there be any wicked way in me, and lead me in the way everlasting.

â€" [Science]

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