Use a Balloon to Amplify Sound

Small sounds will still create a big noise once you use an honest sound conductor. Experiment with a balloon, compressed air and your own ears to seek out out how it works.

What you'll need:

• Balloon

Instructions:

1. Blow up the balloon.
2. Hold the balloon close to your ear while you tap lightly on the other side.

What's happening?

Despite you only tapping lightly on the balloon your ears can hear the noise loudly. after you blew up the balloon you forced the air molecules within the balloon nearer to each other. as a result of the air molecules within the balloon are nearer along, they become a more robust conductor of sound waves than the ordinary air around you.

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How to Make a Tornado in a Bottle

Learn how to make a tornado in a bottle with this fun science experiment for children. Using easy to find items such as laundry detergent, water, glitter and a bottle can make your own mini tornado is much safer than one can see on the Weather Channel. Follow the instructions and enjoy the rush of cold water to create.

What you'll need:

• Water
• A clear plastic bottle with a cap (that won't leak)
• Glitter
• Dish washing liquid

Instructions:

1. Fill the plastic bottle with water until it reaches around three quarters full.
2. Add a few drops of dish washing liquid.
3. Sprinkle in a few pinches of glitter (this will make your tornado easier to see).
4. Put the cap on tightly.
5. Turn the bottle upside down and hold it by the neck. Quickly spin the bottle in a circular motion for a few seconds, stop and look inside to see if you can see a mini tornado forming in the water. You might need to try it a few times before you get it working properly.

What's happening?

Turn the bottle in a circular motion creates a whirlpool that looks like a small tornado. Water is rapidly rotating around the center of the vortex due to the centripetal force (internal force direction of an object or liquid such as water to the center of its circular path). Vortices are found in nature are tornadoes, hurricanes and waterspouts (tornadoes that form over water).

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Learn how to make a lava lamp easier

Learn how to make a lava lamp easier with this fun science experiment for children. Using simple household items such as vegetable oil, food coloring, Alka-Seltzer and a bottle to create chemical reactions and funky colored balls that move like a real lava lamp.

What you'll need:

* Water
* A clear plastic bottle
* Vegetable oil
* Food coloring
* Alka-Seltzer (or other tablets that fizz)


Instructions:

1. Pour water into the plastic bottle until it is around one quarter full (you might want to use a funnel when filling the bottle so you don't spill anything).
2. Pour in vegetable oil until the bottle is nearly full.
3. Wait until the oil and water have separated.
4. Add around a dozen drops of food coloring to the bottle (choose any color you like).
5. Watch as the food coloring falls through the oil and mixes with the water.
6. Cut an Alka-Seltzer tablet into smaller pieces (around 5 or 6) and drop one of them into the bottle, things should start getting a little crazy, just like a real lava lamp!
7. When the bubbling stops, add another piece of Alka-Seltzer and enjoy the show!

If you've tried our oil and water experiment that you know the two do not mix very well. Oil and water added to the bottle separately from each other, with the oil on top, as it has a lower density than water. The dye is dropped through the oil and mixed with water in the bottom. The piece of Alka-Seltzer is dropped after small bubbles of carbon dioxide emissions rising to the top and take a little colored water along the walk. The gas escapes when it reaches the top and the colored water falls back. The reason of Alka-Seltzer fizz so is because it contains citric acid and baking soda (sodium bicarbonate), the two react with water to form sodium citrate and carbon dioxide (which are the bubbles that carry water color on the top of the bottle).

Adding more Alka-Seltzer bottle to keep the reaction going so you can enjoy your funky lava lamp for longer. If you want to show someone later simply screw a bottle cap and add more Alka-Seltzer, when necessary. When you finish all your Alka-Seltzer, you can take the experiment one step more firmly screwed into a bottle cap and the reservoir bottle back and forth, what happens then?

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How i Build a Simple Microscope

A microscope is an instrument used to observe objects that are too small to see with the naked eye. A microscope has a built-in magnifying glass to see things up close and personal. This tool is used in studies of science to many to see things in nature. The new species are discovered by looking at things closely with a microscope. You can even see a little piece of dust in your home to see what all

What you'll need:

• A piece of fuse wire
• Some water
• Objects to look at (newspaper or a magazine with fine print works well

Instructions:

1. Make a loop at the end of the fuse wire about 2mm wide.
2. Dip it into some water to get a drop formed in the loop.
3. Hold it close to your eye and look closely at an object such as a magazine.
4. You may have to experiment to get the right distance but you should see a magnified image, especially if you have the drop as close to your eye as possible.

What's happening?

Pioneers of early microscopes originally used small glass globes filled with water to magnify objects, this is similar to what you are doing in this experiment. The drop of water is the form of a convex lens that refracts light and converges at the point where you see the picture clearly. It was later that the method of grinding glass to make lenses was perfected. Modern microscopes have many goals in them and allow us to see extremely small objects.

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Grow Your Own Salt Crystals

Have fun growing your own salt crystals with this simple project. You can do more research with a microscope, once finished. The crystals are beautiful to look at and might even want to start your own collection.

What you'll need:

• A jar
• Water
• About half a cup of salt
• A spoon for stirring
• String
• Scissors
• 2 toothpicks

Instructions:

1. Fill the jar with water.
2. Add about half a cup of salt to the water.
3. Mix the solution together with a spoon.
4. Cut a piece of string with scissors and tie each end to a toothpick.
5. Place the string over the top of the jar so that the string dangles into the middle of the solution and the toothpicks hang over the edge.
6. Don’t forget to clean up when you’ve finished.

Now what?

Abandon the experiment and wait for the salt crystals to form along the chain. They are an excellent example of cubic crystals and can do more research by examining them under a microscope.

When you look at the different crystals under the microscope can examine the differences between them: They are perfectly formed? What shape? What color? Can you see all microorganisms in the crystals?

The crystals can be found grouped in a lot of small crystals or large crystals. They vary in size from those at the microscopic level everything up to the crystals that are meters long!

Try to collect a number of crystals for your project, the label of the different types and make a rock collection box to keep in

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how to Make Your Own Fossil

Find an interesting object and put it on the stone, leaving the impression of living in the form of a fossil.

Have fun making your own fossils and learning how scientists use them to unlock the secrets of the past, including those that provide a remarkable insight into life in the era of the dinosaurs.

Make Your Own Fossil

What you'll need:

• Plasticine
• 2 paper cups
• An object that you would like to use as the fossilized impression
• Plaster of paris
• Water

Instructions:

1. Flatten a ball of plasticine until it is about 2 cm thick while making sure the top is smooth.
2. Put the plasticine inside a paper cup with the smooth side facing up. Carefully press the object you want to fossilize into the plasticine until it is partially buried.
3. Carefully remove the object from the plasticine. An impression of the object should be left behind.
4. Pour half a cup of plaster of paris into the other paper cup. Add a quarter cup of water to the plaster and stir until the mixture is smooth. Leave it for around two minutes.
5. When the mixture has thickened pour it on top of the plasticine in the other cup. Leave the mixture until the plaster has dried.
6. When the plaster has fully dried, tear away the sides of the paper cup and take out the plasticine and plaster. Keep it in a warm dry place and enjoy your very own fossil.

What's happening?

The fossils are records of great value in the past. In the event that left an impression of an object, but the fossils found by scientists around the world can be traced to the time of the dinosaurs. These fossils allow paleontologists (the name of scientists who study these fossils) to study what life could have been millions of years ago. The fossils, as he did may leave delicate patterns and a surprising amount of detail.

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in Salt Water-Make an Egg Float

An egg sinks to the bottom if you drop in a glass of ordinary drinking water, but what if you add salt? The results are very interesting and can teach you some fun facts about the density.

What you'll need:

• One egg
• Water
• Salt
• A tall drinking glass

Instructions:

1. Pour water into the glass until it is about half full.
2. Stir in lots of salt (about 6 tablespoons).
3. Carefully pour in plain water until the glass is nearly full (be careful to not disturb or mix the salty water with the plain water).
4. Gently lower the egg into the water and watch what happens.

What's happening?

Salt water is denser than tap water, the denser the liquid is easier for an object to float in it. When you lower the egg into the liquid that falls in the tap water until the salt water, at which point the water is dense enough to make the egg float. If you were careful to add tap water to salt water, which have not mixed, allowing the egg to float incredibly the center of the cup.

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