Category Archives: Education

Education Magazine Online Subscriptions

Build a Wind Power Generator For Your School Science Fair Project

Ten Reasons to Build a Wind Power Generator For Your School Science Fair Project | By John Dove

Before you begin planning your project, check with your science teacher to see if it is a good match for you, your class and your school. Are you motivated to learn about electricity, energy and power generation? Does it fit well with your science curriculum? Does your school have sufficient open land and wind to allow the construction and demonstration of a wind power generator? Will your school allow it? Will you have support from your family? If yes is your answer to these questions, go ahead!

1. You will learn about electricity, energy, energy conversion, and local meteorology. In addition demonstrating how to make a wind power generator, you will learn the principles of electricity and meteorology related to wind power generation.

2. The lessons you will learn will last a lifetime. What you learn will serve you well in the future. You will learn how to save money on electric bills. Your knowledge of electricity will be useful in home projects. It may provide the foundation for a future career in alternative energy.


Seed magazine - Subscription

Seed magazine - Subscription

Seed is more than a magazine about science and its discoveries. It treats science as a lens for viewing the world and explores its influence on the social, political, economic, aesthetic, moral, and intellectual landscapes of our time. Seed presents the insights, opinions, and profiles of a changing cultural shift rooted in science, all presented alongside cutting-edge design and photography. Subscribe to the digital edition and get early access to each issue before it reaches the newsstands. You’ll also receive a host of digital enhancements like embedded videos, slideshows, and more.



3. You, your science teacher and your class will be working with a 21st century technology. An old technology – windmills – has been transformed into a new and significant source of power for the future.

4. A wind power generator is a practical application of science. It is based on practical scientific principles.

5. Your project will help save the planet. Wind energy is a free resource. Wind power generation does not require burning fossil fuel such as coal or oil. The result will be cleaner air and less greenhouse gases coming from power plants.

6. Your project will demonstrate a significant and growing source of power for the future. Large scale wind power generation is being rapidly developed in some states as an alternative energy source. Small scale farm and home wind power generators are being installed to save money on electric bills. This is especially true in rural and remote areas.

7. A wind power generator is easy to build and not expensive. With proper guidance, planning and preparation, equipment and tools, you can build a wind power generator over a weekend. The materials you need are not expensive and readily available.

8. Your and your school will gain recognition as being progressive. Schools across the nation are taking action to improve the environment. Your school will be demonstrating its commitment to teach students about alternative energy applications.

  Zinio Digital Magazines - Trees will thank you

9. Your family will benefit too. Your family can assist you as you proceed with your project. They can help locate supplies and share expenses. They may discover that a wind power generator is practical for your home. They may save money on electric bills.

10. You will be introduced to a new career choice in the fast-growing field of alternative energy. You and your classmates will be introduced to a new and exciting possible career in alternative energy – including wind and solar – requiring engineers, technicians, installers and other career paths.

Where do you go for guidance?

Ask your teacher for suggestions. Obtain a manual or guide for your project. It should be written in clear, understandable language. It should have been tested by “average” people with no prior experience in building wind power generators.

Here is where you’ll find the best guidance materials for the do-it-yourselfer: http://world-wind-and-solar.com Each product has been reviewed and rated for your convenience. Step into the 21st century

Build a wind power generator for your school science fair.
Article Source: http://EzineArticles.com/?expert=John_Dove
http://EzineArticles.com/?Ten-Reasons-to-Build-a-Wind-Power-Generator-For-Your-School-Science-Fair-Project&id=2346490

Rocketry Experiments Apologia Science Curriculum

Rocketry Experiments Apologia Science Curriculum | By Aurora Lipper

Every action triggers an equal reaction in the opposite direction. There are many experiments that can use this principle, and it’s my goal to take you beyond your Apologia science curriculum experience, by making science fun and easy for you.


mental_floss - Subscription

mental_floss - Subscription

mental_floss magazine is where knowledge junkies get their fix. It takes the chore out of learning and blurs the line between education and entertainment with its hip, quirky content. Covering everything from black holes to the Dead Sea Scrolls, mental_floss is guaranteed to make you feel smart again.



Have you ever kicked a brick wall? Off course you ended up hurting your toe. As strange as it may sound, when you kicked the brick wall, the stationary wall exerted an equal reaction force in the opposite direction, and therefore you felt the pain. Kick harder and it will hurt more- equal reaction force, you see?

This law has been explained by Sir Isaac Newton centuries ago, and came to be known as his Third Law of Motion. This is the same law that is at work when rockets are launched. If you have searched for cool rocketry experiments in the Apologia science curriculum and other homeschool programs, you will be glad that you found me. Let me show you a fun way of using balloons to simulate the launching of rockets.

Single-Stage Balloon Rocket: Take a twenty-foot long nylon fishing line and tie one end to a window or something strong. Pass the free end of the line through a plastic drinking straw and tie the free end to another strong object such as another window or a bed. The fishing line must be stretched and not left hanging loose. Now blow a long balloon and secure the mouth with a clothespin. Tape this balloon to the straw in such a way that the length of the balloon is parallel to the length of the straw.

Now remove the clothespin and observe what happens. When you remove the clothespin, air is pushed out of the deflating balloon with great force in one direction. Therefore an equal force is exerted on the balloon in the opposite direction, and the balloon moves. The same principle is used in launching rockets into the air.

If your Apologia science curriculum experience stopped here, let me take you further. Some rockets that need to go higher use double fuel tanks or double stages. In the next experiment, I will teach you how to make a cool double-stage balloon rocket.

Double-Stage Balloon Rocket: This experiment is similar to the single-stage balloon rocket experiment; only pass the fishing line through two straws instead of one. Make a one-inch ring out of a Styrofoam coffee cup by removing the base of the cup. Now blow a long balloon just enough so that it can fit snugly inside this Styrofoam ring with the rounded head of the balloon extending a little beyond the ring. Secure the mouth of this balloon with a clothespin. Tape this balloon to the straw on the left hand side with the balloon head pointing to the right.

Now inflate and tape a second long balloon lengthwise to the straw on the right hand side. Twist the mouth-end of the balloon to form a one inch tail. Now pass this tail through the Styrofoam ring and under the first balloon. The air pressure of the first balloon will keep the second balloon from getting deflated.

  Shop your favorite magazines titles  

Bring these two connected balloons to the left hand side of the fishing line and remove the clothespin from the first balloon. What happens?

To get great science experiments and activities, visit the free “Homeschool Parent’s Guide to Teaching Science” at the link below.

A great free resource for really cool science experiments and activities is the Homeschool Science Experiment Guide. Another good homeschool resource for science ideas, experiments and activities, is the homeschool science blog (just click on the Blog link). Definitely worth bookmarking.

Have Fun!

About the Author

Aurora Lipper has been teaching science to kids for over 10 years. She is also a mechanical engineer, university instructor, pilot, astronomer, a real live rocket scientist (You should see the lab in her basement!) and a mom. She has inspired thousands of kids with the fun and magic of science.
Article Source: http://EzineArticles.com/?expert=Aurora_Lipper
http://EzineArticles.com/?Rocketry-Experiments-Apologia-Science-Curriculum&id=2341012

How to Increase the Firing Distance of a Catapult

How to Increase the Firing Distance of a Catapult | By Robert McAvoy

So you decided that you wanted to build a catapult. Now it’s finished and ready to fire. Your excitement builds as you pull the release mechanism then, plop. Your ammo sails a few feet and drops to the ground with a disappointing thud. So much for your plans to hurl water balloons at your neighbor on the other side of the fence. You feel the sting of defeat. What went wrong? Why didn’t it work? Do not despair my friend, for I may have a solution to your problem. The next couple of paragraphs will explain a few things that you can do to increase the firing distance of your siege engine.


Seed magazine - Subscription

Seed magazine - Subscription

Seed is more than a magazine about science and its discoveries. It treats science as a lens for viewing the world and explores its influence on the social, political, economic, aesthetic, moral, and intellectual landscapes of our time. Seed presents the insights, opinions, and profiles of a changing cultural shift rooted in science, all presented alongside cutting-edge design and photography. Subscribe to the digital edition and get early access to each issue before it reaches the newsstands. You’ll also receive a host of digital enhancements like embedded videos, slideshows, and more.



Check your construction. Make sure your catapult has been properly built. Improperly fitted parts or loose parts can affect the efficiency of your machine. One of the biggest areas of energy loss in a catapult is the pivot points. Anywhere something pivots there will be friction. Make sure the parts move freely, without binding. Depending on your construction lubrication may be needed. If your pivot point is a wooden axle through a hole drilled in another piece of wood make sure it’s not too tight. If the fit is too tight, lightly sand until a proper fit is achieved. If there is too much play replace the piece of wood with the hole in it with a new piece that has a smaller hole. Too much play can also cause energy loss.

More tension! Many catapults are built using springs, bungee cords, or surgical tubing as the source for tension to the firing arm. Beef them up! Replace your existing springs with stronger springs. The same applies to bungee cords rubber bands. Replace the existing ones with something a little stronger. You can also add more springs or cords to the existing ones (double them up). If you have an onager, try winding the cord that is attached to the throwing arm a little tighter. This will increase the tension and force of the throwing arm when it is released. One thing to keep in mind if you are going to increase your spring tension: make sure the framework and firing arm are sturdy enough to handle the increased tension. You don’t want your siege engine to blow apart when you fire it. You may need to reinforce the frame and throwing arm to accomplish this.

All hail the trebuchet! Ah, the mighty trebuchet. It is by far my favorite of all the siege engines. It is far more sophisticated in design than other types of catapults. When properly tuned the distance and accuracy are incredible. Getting to this point can be a real pain in the rear end if you’re not sure what to do. You can build a trebuchet that works, or build one that works really well. I have a small table top model that can hurl a small wooden cannonball about 20 feet across my basement. If I place a 9″ paper plate on the floor as my target I can land every shot in the plate. I achieved this accuracy by simply making adjustments to the sling (length is critical!). Read on to find out how to tune your trebuchet.

As I mentioned above, pivot points are areas of friction. Excess friction means energy loss. Make sure the pivot point of the throwing arm moves freely without binding. Adjust as necessary. If your trebuchet has a hinged counterweight make sure this pivot point moves freely as well. While we’re on the subject of counterweights, keep in mind that the further the distance the counterweight falls, the greater the energy is to the throwing arm. Raising the height of the main axle (pivot point for throwing arm) and lengthening the throwing arm will allow the counterweight to travel further when released. Increasing the weight of the counterweight will help as well. Note that changing the length and height of the throwing arm will require adjustments to the sling. Slings are a very critical piece of a well tuned trebuchet. Incorrect lengths can cause the sling to release at the wrong time. This can result in a high arc with very short distance or a low arc with a short distance. Experiment with the sling length for greatest distance. Make sure the pouch isn’t too large for the ammo. This can result in excess wind drag. Use as small a pouch as possible for the size ammo you are using.

  Zinio.com - Centerfolds without the Staples  

I hope this information is helpful to those who may need it. As a final note I want to mention that while catapults are fun, they can be dangerous as well. When making modifications to your catapult make sure the overall structure can handle the changes. Reinforce as necessary. Always use proper safety measures when firing a catapult. Eyewear is always recommended. Maintain a safe distance from the machine when you are firing it. With safety in mind operating a catapult can be a fun experience for people of all ages. Happy Hurling!

For more information about how catapults work and how to build them please visit http://www.learntobuildcatapults.com
Bob McAvoy, Founder http://www.learntobuildcatapults.com
Article Source: http://EzineArticles.com/?expert=Robert_McAvoy
http://EzineArticles.com/?How-to-Increase-the-Firing-Distance-of-a-Catapult&id=2400164

Can an elephant can run faster than a human being?

Animal Speeds | By Javan McCabe

If you were asked whether an elephant can run faster than a human being, what would your answer be? An elephant maybe an enormous animal but it can reach speeds of up to 25mph, faster than the vast majority of humans. The exception being, top class sprinters such as Usain Bolt who for one has recorded a speed of 27mph albeit over a 10m segment of a race. So the correct answer to this question is yes. It’s also true that elephants themselves rarely reach that top speed of 25mph unless they’re angry. Just remember, unless you’re Usain Bolt, don’t annoy one!


Seed magazine - Subscription

Seed magazine - Subscription

Seed is more than a magazine about science and its discoveries. It treats science as a lens for viewing the world and explores its influence on the social, political, economic, aesthetic, moral, and intellectual landscapes of our time. Seed presents the insights, opinions, and profiles of a changing cultural shift rooted in science, all presented alongside cutting-edge design and photography. Subscribe to the digital edition and get early access to each issue before it reaches the newsstands. You’ll also receive a host of digital enhancements like embedded videos, slideshows, and more.



The black mamba, a feared and dangerous snake from Africa has enough venom to kill 10-25 grown men in one single bite. It is the fastest land snake on earth and has been known to touch 20mph, although this is more common when escaping from prey and not hunting it.

The peregrine falcon is easily the fastest creature over any land mammal, reaching speeds of over 200mph. The fastest land mammal is the cheetah which can travel at 70mph but only in short bursts. Unlike the cheetah, the pronghorn antelope from North America has excellent stamina but its maximum speed is around 61mph and is the second fastest over land. The lion, the wilderbeest and the Thomson’s gazelle can all reach 50mph and make up the top five quickest land creatures.

The slowest is of no surprise. At 0.03mph, the garden snail takes the wooden spoon. The three-toed sloth and the giant tortoise are similar in speed reaching 0.15 and 0.17mph respectively.

The domestic cat can travel at 30mph which isn’t much use if it’s being chased by a 40mph greyhound in the open, and it’s equally as fast as a kangaroo and a grizzly bear.

  Zinio.com - Centerfolds without the Staples  

The hyena, ostrich and zebra reach speeds of around 40mph, the rabbit 35mph and the giraffe 32mph. Much slower are the chicken (9mph), the pig (11mph), and the squirrel (12mph).

For more interesting facts, extracts and true stories from around the world visit http://realapedia.blogspot.com
Article Source: http://EzineArticles.com/?expert=Javan_McCabe
http://EzineArticles.com/?Animal-Speeds&id=2413556