segitiga bermuda

The Bermuda Triangle

Learn more about the Bermuda Triangle mystery with our interesting facts, secrets, history and theories. Are the reported ship and aircraft incidents and disappearances related to some kind of supernatural force or have the mysterious stories been exaggerated?

Perhaps science can offer some answers, maybe the Bermuda Triangle is actually no different from other parts of the ocean. Enjoy our facts and information and decide for yourself.

• Located in the Atlantic Ocean, the Bermuda Triangle falls between Bermuda, Puerto Rico and Florida.
• The Bermuda Triangle has long been believed to be the site where a number of mysterious plane and boat incidents have occurred.
• While it has become part of popular culture to link the Bermuda Triangle to paranormal activity, most investigations indicate bad weather and human error are the more likely culprits.
• Research has suggested that many original reports of strange incidents in the Bermuda Triangle were exaggerated and that the actual number of incidents in the area is similar to that of other parts of the ocean.
• While its reputation may scare some people, the Bermuda Triangle is actually part of a regularly sailed shipping lane with cruise ships and other boats also frequently sailing through the area.
• Aircraft are also common in the Bermuda Triangle with both private and commercial planes commonly flying through the air space.
• Stories of unexplained disappearances in the Bermuda Triangle started to reach public awareness around 1950 and have been consistently reported since then.
• Unverified supernatural explanations for Bermuda Triangle incidents have included references to UFO’s and even the mythical lost continent of Atlantis.
• Other explanations have included magnetic anomalies, pirates, deliberate sinkings, hurricanes, gas deposits, rough weather, huge waves and human error.
• Some famous reported incidents involving the Bermuda Triangle include:
• The USS Cyclops and its crew of 309 that went missing after leaving Barbados in 1918.
• The TBM Avenger bombers that went missing in 1945 during a training flight over the Atlantic.
• A Douglas DC-3 aircraft containing 32 people that went missing in 1958, no trace of the aircraft was ever found.
• A yacht was found in 1955 that had survived three hurricanes but was missing all its crew.

 source: http://www.sciencekids.co.nz/sciencefacts/earth/bermudatriangle.html

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Physics Project

 

Make a simple microscope using water and take a closer look at the world around you.

The lens you create with water works like a microscope or magnifying glass, allowing you to see objects in much greater detail than if you were just looking with the naked eye.

Make Your Own Microscope

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 tiny glass globes filled with water to magnify objects, this is similar to what you are doing in this experiment. The water droplet forms the shape of a convex lens, which refracts the light and converges it at the point where you see the image clearly. It was later that the method of grinding glass to make lenses was perfected. Modern microscopes have many lenses in them and allow us to see extremely small objects.

 

 

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rainbow

Rainbow in a glass.

You will need the following materials:

• four different colors of food coloring (e.g. red, yellow, green, blue)
• five tall glasses or clear plastic cups
• ¾ cup (180 g) of granulated sugar
• a tablespoon for measuring
• 1 cup (240 ml) water

In the first glass, add one tablespoon (15 g) of sugar. In the second glass, add two tablespoons of sugar, three in the third glass, and four in the last glass. Then add three tablespoons (45 ml) of water to each glass, and stir until the sugar is dissolved. If the sugar in any of the glasses will not dissolve, add one more tablespoon (15 ml) of water to all of the glasses, and stir again. When the sugar is completely dissolved, add two or three drops of red food coloring to the first glass, yellow to the second, green to the third, and blue to the last glass.

In the remaining glass we will create our rainbow. Fill the glass about a fourth of the way with the blue sugar solution. Next, carefully add the green solution to the glass. Do this by putting a spoon in the glass, just above the level of the blue solution. Slowly pour the green solution into the spoon, raising the spoon to keep it just above the level of the liquid, until the glass is half full. Add the yellow solution, and then the red one in the same manner. What do you notice about the colored solutions?

The amount of sugar dissolved in a liquid affects its density. The blue solution has the most sugar dissolved in it and is therefore the densest. The other solutions are less dense than the blue solution, so they float on top of it. The densities of the solutions should be very close however, and the solutions are miscible, so you will see that the layers do not form well defined boundaries as in the first experiment. If done carefully enough, the colors should stay relatively separate from each other. What do you think will happen if you stir up the liquids in the glass?

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momentum, impulse and collision

Momentum

 

The sports announcer says, "Going into the all-star break, the Chicago White Sox have the momentum." The headlines declare "Chicago Bulls Gaining Momentum." The coach pumps up his team at half-time, saying "You have the momentum; the critical need is that you use that momentum and bury them in this third quarter."

Momentum is a commonly used term in sports. A team that has the momentum is on the move and is going to take some effort to stop. A team that has a lot of momentum is really on the move and is going to be hard to stop. Momentum is a physics term; it refers to the quantity of motion that an object has. A sports team that is on the move has the momentum. If an object is in motion (on the move) then it has momentum.

Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum - it has its mass in motion. The amount of momentum that an object has is dependent upon two variables: how much stuff is moving and how fast the stuff is moving. Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.

Momentum = mass • velocity

In physics, the symbol for the quantity momentum is the lower case "p". Thus, the above equation can be rewritten as

p = m • v

where m is the mass and v is the velocity. The equation illustrates that momentum is directly proportional to an object's mass and directly proportional to the object's velocity.
The units for momentum would be mass units times velocity units. The standard metric unit of momentum is the kg•m/s. While the kg•m/s is the standard metric unit of momentum, there are a variety of other units that are acceptable (though not conventional) units of momentum. Examples include kg•mi/hr, kg•km/hr, and g•cm/s. In each of these examples, a mass unit is multiplied by a velocity unit to provide a momentum unit. This is consistent with the equation for momentum.

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