Sunday, April 26, 2009

Science Fair Projects Kids Will Think is Fun - Does Air Take Up Space

Do you want your kids to love science? If so, make sure they do science fair projects kids will find fun. Kids will not be interested in projects that are not very visual and that are not very easy to do. They want to see the results in a very short time; I've seen that over and over again with my little granddaughter Anabel. She loses interest very soon if things are moving too slow!

So, here is a science fair projects kids will find fun and easy. It actually is two experiments that can be done, first the one and on the next day the other so it does not take too long.

Does air take up space?

The case of the dry tissue paper

After you have done this experiment you should be able to answer the following questions:

1. How does the tissue paper feel after the first part of the experiment? 2. What do you see when you turn the glass slightly? 3. What causes these bubbles? 4. What happens to the tissue paper now? 5. What do you think stopped the tissue paper from getting whet the first time? 6. What was there between the tissue paper and the water? 7. Look around, is there air around you? Can you see the air?

What you need for your project:

* One tissue * A glass * A bowl * Water

How to do this experiment:

1. First you have to crumple the tissue and place it in the bottom of the glass making sure there is a relatively big space between the rim of the glass and the tissue. 2. Now you have to turn the glass up side down and submerge it in the water making sure you keep it completely vertical. 3. Take the glass out of the water and feel the tissue. 4. Now do the same, but turn the glass slightly so the air can escape. 5. Take it out again and feel the tissue. 6. Now and try all the questions on top.

Conclusion:

Air takes up space and it is all around us. The tissue stays dry in the first part because the air between the water and the tissue prevent the water from reaching it and making it whet. In the second part you allowed the air to escape and water could fill that space left by the escaping air. The air was not there to form a layer between the water and the tissue any more, so the water reached the tissue and made it whet.

The case of the airlock

After you have completed this, one of our science fair projects kids will love to do, you should be able to answer the following questions:

1. What do you do when you seal the opening of the bottle with the adhesive clay? 2. What happens when you pour the water in the funnel while the bottle is sealed? 3. Why do you think it happens? 4. Why doesn't the air escape through the opening in the funnel? 5. Why do you keep the top opening of the straw closed at first? 6. What happens when you take away your finger after you have inserted the straw in the opening of the funnel? 7. Why do you think it happens? 8. What does it tell you about the properties of the water as well as the air?

What you need for this experiment:

* A funnel with a short stem * A bottle with an opening that the funnel fist snuggly in * Adhesive clay * A straw * A jug * Water

What to do:

1. Place the funnel in the bottle 2. Seal the rim of the bottle with adhesive clay making sure it is completely sealed and no air can escape 3. Put the water in a jug and pour some of it into your funnel and observe what happens. 4. Now you take the straw and while keeping one end closed with your finger, push it into the funnel. 5. Remove your finger 6. Observe what happens now

Conclusion:

The air in the bottle is trapped and prevents the water from running into the bottle. No air can escape through the water as the water molecules in the opening of the funnel because of the surface tension in the water. (What is this?) When you insert the straw in the bottle, you hold one opening closed to prevent the water from the funnel to go into the straw. When the straw is through the water layer and you remove your finger, the air in the bottle can escape through the straw and the water starts pouring into the bottle.

These two science fair projects kids will love to do can be turned into a very good science fair project. Pay attention to the scientific method and your display. by Magrietha Du Plessis

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Sunday, April 5, 2009

Online Bachelor Degree Costs - What is the Cost of an Online Bachelors Degree Course?

The cost of online bachelor degrees can vary significantly, depending on the online campus you go through. Sometimes called distance learning centers, most of them have the similar characteristics that you can complete your coursework and get your lectures, questions and assignments from your Instructor all via the internet.

It is a common requirement that you login a certain minimum of days per week, but you can choose the days and times, so it offers 100% flexibility enabling you to work your study in around your current lifestyle, unlike campus training. Some of them have learning teams where you can collaborate on assignments.

Online bachelor degrees are a great way to further your education and make you more marketable in a job search. While learning from the convenience of your home, it allows you to save travel expense and hassle. Some of the online campuses offer accelerated programs that allow you to learn at your own pace and get completed much quicker.

Online Bachelor degree costs are also dependent on whether you are eligible for financial assistance or employer tuition reimbursement, and some of the online degree costs are based on the price per credit hour, usually around a few hundred dollars. Some students may be eligible for grants and assistance, based on their income.

The other thing that determines the online degree cost is whether you will be using student loans, or paying as you go. You need to be comfortable with the terms and conditions of the loans, and make sure they will be comfortable for you to repay after you have completed the online course.

Online Bachelor Degree costs can be more affordable, if you are a resident of the State that the online college degree is through, for example, $11,000 versus up to $50,000 for a non-resident, although some online bachelor degree costs are the same at many online universities and can range from $15,000 to $25,000. Depending on which online campus you decide on, they are all somewhat similar in costs, and you can get an accredited online Bachelor degree cost for under $32,000, most generally.

When shopping for online degrees, you need to do the research to make sure the college is accredited by Council on Higher Education or U.S. Department of Education. There are some fake accreditation agencies out there, over 30 of them, in fact, so be careful. If the online Bachelor degree costs seem too cheap, it is probably reason for alarm. By using the amounts above as a guideline, you should be able to find an accredited online campus for your degree.

An online Bachelors degree from a college that is not accredited is not worth the paper it is written on. While most of the online campuses are legitimate, there are some scams out there that might lead you to believe you can purchase one for a few thousand by passing a simple test, completing an application in a very short amount of time, or claim you have earned it based on your resume. by John Maxted

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