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Why are icebergs made of fresh water?
True icebergs are galcier fragments that have fallen into the sea. Glaciers are made of compacted smow, which is fresh water. Additionally, "sea ice" that forms from the freezing of sea water is also basically fresh water as well. This is because when saltwater freezes, it excludes salt from the ice crystal lattice.
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What determines the pitch of the sound?
Since pitch is such a close proxy for frequency, it is almost entirely determined by how quickly the sound wave is making the air vibrate and has almost nothing to do with the intensity, or amplitude, of the wave.
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How long is a professional basketball game?
An NBA game is 4 quarters of 12 minutes each, for a total of 48 minutes. However, regulation time is stopped for many aspects of gameplay, like fouls, ball out-of-bounds, timeouts, and a 15-minute halftime. That makes the wall-clock duration of typical games 2-2.5 hours.
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Is there a difference between a pig and a hog?
In the United States, the term "pig" refers to a younger domesticated swine weighing less than 120 pounds (50 kilograms), and the term "hog" refers to older swine weighing more than 120 lbs. In Great Britain all domesticated swine are referred to as pigs.
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How many emirates are there in the United Arab Emirates?
Federation formed in 1971 by seven emirates known as the Trucial States—Abu Dhabi (the largest), Dubai, Sharjah, Ajman, Fujairah, Ras al-Khaimah, and Umm al-Qaiwain. In addition to a federal president and prime minister, each emirate has a separate ruler who oversees the local government.
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How many languages are there in the world?
There are approximately 6,900 distinct languages in existence today, though there may be languages spoken in remote areas that we have yet to discover. No matter how many new languages we find, though, this number will be much lower in 100 years.
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What gland is responsible for regulating metabolism?
The thyroid gland regulates the body's metabolism, while parathyroid glands regulate calcium levels and have no effect on metabolism.
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How fast does a rocket have to travel to escape the Earth's gravity?
If you want to completely escape Earth's gravity and travel to another moon or planet, though, you need to be going even faster - at a speed of at least 7 miles per second or about 25,000 miles per hour.
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How many times does a bee flap its wings in a second?
"In contrast to the fruit fly that has one eightieth the body size and flaps its wings 200 times each second, the much larger honeybee flaps its wings 230 times every second."
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Do you weigh less at the equator?
If you weighed 100 pounds at the north pole on a spring scale, at the equator you would weigh 99.65 pounds, or 5.5 ounces less. Your mass, in grams, however would stay the same because 'grams' is a measure of the resistance of a body to being moved and has nothing to do with acceleration or gravity.
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What are bones made up of?
Bone is made mostly of collagen, a protein that is woven into a flexible framework. Bone also contains calcium phosphate and calcium carbonate, minerals that add strength and harden the framework. The combination of calcium and collagen gives the bone its strength and flexibility.
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What kind of fuel do NASCAR engines run on?
NASCAR engines burn 110-octane leaded gasoline. Indy cars burn pure methanol (a.k.a. wood alcohol, CH3OH). Top Fuel dragsters and funny cars burn nitromethane (CH3NO2).
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What animal can live after being frozen?
Wood Frogs Can Survive Being Frozen Solid, Over and Over. Every autumn, the sanest animals head south, fleeing the encroaching winter lest they freeze to death or get torn apart by yetis.
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What does the Mercedes logo stand for?
The Mercedes-Benz logo is one of those meaningful ones. In 1926, Emil Jellinek, Gottlieb Daimler, and Carl Benz founded what would become one of the world's foremost luxury car companies. The logo is a three-pronged star meant to symbolize universal motorization. The three prongs stand for land, water and air.
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Why Does Urine Glow Under a Black Light?
You can use a black light to detect body fluids. It's actually a good way to look for pet urine or make sure a bathroom or hotel room is really clean. Cat urine, in particular, glows very brightly under ultraviolet light. Urine glows under a black light primarily because it contains the element phosphorus.
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What country has the Gobi desert in it?
The Gobi is a large desert region in northern China and southern Mongolia. The desert basins of the Gobi are bounded by the Altai mountains and the grasslands and steppes of Mongolia on the north, by the Tibetan Plateau to the southwest, and by the North China Plain to the southwest.
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Which is the largest landlocked country?
The largest country with no border-access to the open ocean is Kazakhstan, which has an area of 2,724,900 km² (1,052,100 mile²) and is bordered by Russia, China, Kyrgystan, Uzbekistan, Turkmenistan, and the landlocked Caspian Sea.
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Who invented the cigarette?
The first commercial cigarettes were made in 1865 by Washington Duke on his 300-acre farm in Raleigh, North Carolina. His hand-rolled cigarettes were sold to soldiers at the end of the Civil War. It was not until James Bonsack invented the cigarette-making machine in 1881 that cigarette smoking became widespread.
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Who completed the first circumnavigation of the world?
The Spanish Magellan-Elcano expedition of August 1519 to 8 September 1522, started by Portuguese navigator Fernão de Magalhães (Ferdinand Magellan) and completed by Spanish navigator Juan Sebastián Elcano after Magellan's death, was the first global circumnavigation.
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Why does the earth act like a magnet?
Earth's magnetic field is mostly caused by electric currents in the liquid outer core, which is composed of conductive, molten iron. Loops of currents in the constantly moving, liquid iron create magnetic fields. From afar, the Earth looks like a big magnet with a north and south pole like any other magnet.
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What is the color of Venus?
Venus: yellowish-white; we can only see the thick layer of colorless and featureless sulfuric acid clouds. You can find more detailed info on Venus here. Earth: light blue with white clouds; oceans and light scattered by the atmosphere make Earth prevailingly blue
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How many official languages are spoken in South Africa?
There are eleven official languages of South Africa: Afrikaans, English, Ndebele, Northern Sotho, Sotho, Swazi, Tsonga, Tswana, Venda, Xhosa and Zulu. Fewer than two percent of South Africans speak a first language other than an official one.
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How many years is 1 human year to a dog?
But the conventional wisdom that one dog year equals seven human years is an oversimplified view of how old your dog is in human years. Although a dog's age averages out this way, there is quite a bit of variation. For example, dogs mature more quickly than children in the first couple of years.
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Who was algebra named after?
The word algebra comes from the Arabic language (الجبر al-jabr "restoration") from the title of the book Ilm al-jabr wa'l-muḳābala by al-Khwarizmi. The word entered the English language during Late Middle English from either Spanish, Italian, or Medieval Latin.
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What causes the color of the red sea?
Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.
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Why is beer in brown bottles?
Beer bottle is a bottle made to contain beer, usually made of glass and comes in various sizes, shapes and colours (usually brown or green). Dark amber or brown glass greatly reduces the presence of UV light, a contributing factor of beer spoilage. However, lighter-colored bottles are often used for marketing reasons.
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What are the 13 colonies of the United States?
In the end the thirteen colonies were: Delaware, Pennsylvania, New Jersey, Georgia, Connecticut, Massachusetts Bay, Maryland, South Carolina, New Hampshire, Virginia, New York, North Carolina, and Rhode Island and Providence Plantations.
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What is the country of Brazzaville?
In order to distinguish between the two African countries with "Congo" in their names, the Republic of the Congo is sometimes called Congo-Brazzaville, as opposed to Congo-Kinshasa (the Democratic Republic of the Congo, known from 1971 to 1997 as Zaire, the capital of which is Kinshasa).
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How deep does a whale go in the ocean?
They have been tracked by sonar diving to depths of 3,900 feet. However, one Sperm whale caught by a whaling ship in water 10,000 feet deep had a bottom-dwelling shark in its stomach, leading researchers to believe that the Sperm whale can dive a lot deeper than seems possible.
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Why do you get on the left side of a horse?
You have to go back to ancient times when horses were used as war mounts. Soldiers carry their swords on the left side (to reach with their right hand) and so they could only mount from the left or they would sit on their sword.
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