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What is the temperature of a blue flame?
- By Forinfos
- 25/12/2025
- 0 comments
When a compound burns, its molecules absorb thermal energy, becoming excited and unstable. To move to a more stable state, they emit energy in the form of light. The wavelength, and therefore color, of the emitted light depends on the amount of energy absorbed and expended. The blue end of the spectrum corresponds to shorter wavelengths and higher energy, while the red end has longer wavelengths and lower energy. As temperature is a measure of thermal energy, a compound burning with a blue color should be hotter than the same one burning red.
How do geysers work?
- By Forinfos
- 25/12/2025
- 0 comments
When it rains or snows, the water from those events can work its way underground through fractures in rocks near the surface. When this water comes into contact with hot rock, it begins to move back toward the surface. As the water moves upward, it passes through volcanic ash or silica-rich lava. The water dissolves this material and carries it upward toward rock crevices closer to the surface. This can cause the rocks above to narrow and hold the increasing pressure. This creates the plumbing the geyser needs. Finally, the water nears the surface. As it does, the pressure drops, causing the w..
What are some swamp animal adaptations?
- By Forinfos
- 25/12/2025
- 0 comments
The pond skater glides over the surface of the water with its cleverly adapted paddle-like legs, allowing it to use the surface tension of the water to cover large expanses of water very quickly and efficiently. In addition to webbed feet, the beaver has a waterproof coat, which helps it maintain its body temperature and stay warm, even in very wet, damp areas such as a swamp or pond.\nCamouflage is an effective adaptation by animals that live in swamps. Frogs, for example, often bury themselves in aquatic plants and only leave their eyes poking out above the water to watch for predators and f..
What is the molar mass of KBr?
- By Forinfos
- 25/12/2025
- 0 comments
Potassium bromide is a white, water-soluble powder. It has a sweet taste in low concentrations and a salty, bitter taste at high concentrations. Potassium bromide was discovered in the 19th century. It was first used as an anticonvulsant and a sedative. The ionic salt can also be used as in anticonvulsant in dogs, and it is a common veterinary medicine.
How many pennies does it take to make 100 grams?
- By Forinfos
- 25/12/2025
- 0 comments
The weight discrepancy between pennies minted before and after 1982 is a result of different compositions. Pre-1982 pennies are composed of 95 percent copper, while post-1982 pennies are 97.5 percent zinc and coated with a thin layer of copper. The U.S. Mint switched to making pennies primarily out of zinc because copper had become prohibitively expensive. Both copper and zinc pennies were minted in 1982; a scale is the only way to tell the composition of a penny minted in that year.
What color is oxygen?
- By Forinfos
- 25/12/2025
- 0 comments
Oxygen is in group 16 of the periodic table. Because of its six valence electrons, this element is highly reactive and known to form compounds with nearly all other elements, either by direct reactions or displacement of elements from combinations that had already been formed. Many of these processes involve combustion, and others involve rust. Many ores of metal are oxides, such as iron oxide and mercury oxide.
How many pounds equal a ton?
- By Forinfos
- 25/12/2025
- 0 comments
In the United States and Canada, a ton is sometimes referred to as a "short ton" or "net ton" and is always equal to 2,000 pounds. In the United Kingdom, where the imperial system is used, the ton is often referred to as a "long ton" and is equal to 2,240 pounds or 1,016 kilograms. In areas where the metric system is used, a metric ton is equal to 1,000 kilograms.
What are some fun facts about Uranus?
- By Forinfos
- 25/12/2025
- 0 comments
Uranus is the coldest planet in the solar system, but Neptune is farther away from the sun. The other large planets in the solar system give off more heat than they absorb from the sun, but Uranus doesn't. Something has caused the core of Uranus to cool, so it no longer radiates much heat.\nUranus is the second least-dense planet after Saturn. It is 14.5 times more massive than Earth. Because its density is so low, a person standing on the surface of Uranus would only experience about 89 percent of Earth's gravity.\nWhereas most planets have been known since ancient times, Uranus was..
How does a magnifying glass start a fire?
- By Forinfos
- 25/12/2025
- 0 comments
Photons are particles that transmit light and energy in the form of heat. The unique convex shape of a magnifying glass pulls the photons to one side of the lens, localizing them into a single point of exit. This creates an extremely high heat concentration, of about 450 degrees, that is capable of starting a fire. The larger the lens is, the easier it is to start a fire. However, even a pocket magnifying glass is capable of starting a fire.\nAny convex lens, such as those found in eyeglasses or binocular lenses, can be used in the same way. A drop of water placed on the lens can intensify the..