Archive for May, 2011

How do detergents affect plant growth

The ecology conservationists are always talking about how the chemicals we seem to use mindlessly each day are actually polluting the earth badly. There is a lot of debate on how the water polluted with dish washers and detergents enters the water cycle and causes harm to the environment in terms of both flora and fauna.

In this science project we are going to try and prove if detergents actually do affect the growth of plants. To do so we are going to use three identical plants and use one of them as control. That means the control plant will be kept under the same environmental conditions but will get regular water. The second plant will be given half cup detergent with half cup water. While the their plant will get half cup dish washer fluid and half cup water.

Use the above combination to water the three potted plants on a daily basis for a week and observe the effects on each individual plant. By using our hypothesis it would stand that the plant that got normal water grows at a steady pace. At the same time the plants that are getting the supposedly poisonous mix of detergent and dish water should not be doing quite so well. Is that really what happens in your science project? Check and see.

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Vitamins for Plant Growth

Vitamins are supposed to be good for you, but are they good for plants too? That’s the question we try to answer with this science project. Just how good are vitamins for plant growth? Do they make a marked difference or do they make no difference at all. What are fertilizers after all if not some distant cousin of vitamins? They make up for deficiencies in the soil to give the plant better growth don’t they? So why should the vitamins that help us not help plants grow better too.  Let’s experiment and find out.

Take three identical saplings and use one of them as control. The other two are going to get vitamins and fertilizer doses for the experiment. You will need to place the plants all in the same area so that they can get the same amount of exposure to sun and the other natural elements. They will be watered together at the same time and in the same quantity. The only difference will be the supplements that they get.

The plants will be observed for a three month period with recording of observations made each week. The growth spurts of each plant will be notes in inches and recorded in a journal which will prove useful to make comparisons as time progresses. The Science Project can be terminated any time after there is enough data to provide a well rounded project.

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Does Boiling Beans cause them to grow better?

This is an interesting science project. The growth of a plant is better in the absence of bacteria. A fact that no one who has studied horticulture will deny. Another fact is that if you boil something you kill the bacteria on it and sterilize it. Agreed to that one too since most of us have seen sterilization in progress at some location or the other.

So if we boil beans to sterilize them will they grow better and into plants faster? Plus dry seeds take time to absorb water to germinate. Will the boiling process speed up germination too? Of course cooking the beans for too long would make it impossible to grow. So what’s the optimum time to soak and boil the beans? Or does boiling the beans even a wee bit kill them and no plant will ever grow from them? That’s what we hope to find out with this science project.

What we need is a bag full of lentil beans. About 50 of them. Now divide them into groups of 10 each and place them in different bowls. Each of the five bowls will get a different treatment. One set will be used as control and planted into a pot. The second one will be soaked for 24 hours and then planted in a pot.

The third set get to soak 24 hour and then boiled for a minute before being planted in the pot. The fourth set get the 24 hour soaking and a 5 minute boiling before they go into the pot. Last lot gets soaked 24 hours and boiled for 10 minutes before being planted in the pot. Now observe the 5 pots for a month and record observations every week. You may be surprised at the observations you get in this science project.

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Boiling Water Science Project

In the previous experiment we tried to find out just how adding salt to water before boiling it affected the time it took to boil water and its temperature. In this post we’ll discover how such a simple activity can be combined into a full scale science project. By merely increasing a few variables in the same experiment and performing it repeatedly with these variable you can have an attractive science project ready in no time at all.

The key to it all is taking a number of readings as you substitute the variable. Now you can just just salt or you can add different things such as sugar or vinegar to the boiling water. Or just take salt in different amounts such as one tablespoon or two or three for the different repetitions of the experiment. Make sure that you adjust the data recording and hypothesis according to your choice of variable.

Now do the actual experiment and keep good records. Remember you will be using the data you collect in tables to demonstrate the variable’s effect on the simple process of boiling water. You can draw conclusions based on the data that you collect and either support or modify your hypothesis so that it works for the science project. There’s a lot your can play around with, so have fun experimenting.

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Salt and Boiling Water

In many cook books we read the preliminary instruction which says add salt to water before boiling it. Finding out why is going to be the aim of this science experiment. Does adding the salt to the water make it boil faster? Or does adding salt to the water make it boil at a higher temperature which may be required for the recipe? That’s what you will hope to find out as you perform this science experiment.

What all will you need for this process? Table salt, naturally, and distilled water so that no other factor affects the boiling temperature. Plus you will need a thermometer to check accurately just what the temperature of the boiling water is. And of course a timer to check how soon the water boiled. You will also need a spoon to shovel the salt into the water. And of course a container in which the water will be boiled.

Now make sure that an adult is aware that you are performing the experiment as the heating the water is potentially dangerous. It would be best to enlist your parent’s help as you set about doing this experiment. First you need to boil a cup of water without salt and see how long it took to reach boiling point. Measure the temperature with care. In the second round you add a tablespoon of salt to the water and make the same recordings. Now you will be able to reach the right result for your science project.

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