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What color is produced when you mix purple and orange?

Orange and purple are secondary colors on the color wheel, meaning they are created by mixing two primary colors. Orange is created by mixing the primary colors red and yellow. Purple is created by mixing the primary colors blue and red. Mixing purple and orange together creates various hues of brown depending on the amount of orange and purple used. Adding more orange brightens the shade of brown due to the red and yellow primary colors. Adding additional purple darkens the shade of brown due to the red and blue primary colors.

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What is it called when a gas changes to a liquid?

Condensation is a naturally occurring physical phenomena that plays an important role in the Earth's water cycle. Without condensation, the water that evaporated into the atmosphere would remain there indefinitely. The condensation of evaporated water on Earth promotes cloud formation, and allows for the redistribution of water across Earth's biomes. Condensation and evaporation can occur in compounds and elements other than water, although water is the most commonly occurring example in nature.

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What is an asteroid belt?

The asteroid belt may have been created by material that almost formed a planet between Mars and Jupiter. Jupiter's gravity stopped the planet's formation and swept up much of the original material in the asteroid belt. Scientists believe the asteroid belt originally contained enough material to form a planet four times the size of Earth. Today, however, if all the material in the asteroid belt somehow formed a planet, it would only be about half the size of the moon.\nAlthough there may be millions of asteroids, they are spread out over a very large area. In "Star Wars," the asteroi..

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Do all cells have a nucleus?

Eukaryotic cells have a defined nucleus, otherwise called the "brain" of the cell. This nucleus is surrounded by a membrane which separates the nucleus from the other clearly defined parts of the cell, called organelles. Examples of organelles are mitochondria and chloroplasts. Eukaryotic cells have the ability to become any type of tissue, based on their specific DNA.\nProkaryotic cells do not have a defined nucleus with a membrane, and typically lack the organelles of a eukaryotic cell. The DNA is contained within the cell walls in a random fashion. Due to the lack of organization, prokaryot..

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Why does temperature change during the seasons?

The axis of Earth is tilted 23.5 degrees from the vertical, always in the same direction relative to the sun. This means that as the Earth revolves around the sun, different hemispheres face in opposite directions. For example, the Northern Hemisphere is pointed toward the sun from late March to late September. From the perspective of Earth, the sun appears to rise higher in the sky and sunlight is closer to striking the earth vertically. This means that any given area on Earth receives a more concentrated dose of sunlight, which heats the ground and air.\nIn the winter, the sun appears to ris..

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What is a high pitch noise that adults can't hear?

The loss of high-frequency hearing is a natural result of aging. People over the age of 50 often have a hard time hearing pitches higher than 11 or 12 kilohertz. Noise generators that produce a loud 17-kilohertz whine have been used by retail store owners to discourage teenagers from loitering around their storefronts. While most teenagers find the noise unpleasant, most adults cannot hear it at all.

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What colors make indigo?

Indigo is one of the seven spectral colors that are created by a single wavelength of light. Equal parts blue and red are used to make violet, whereas indigo contains more blue than red. When using the acronym ROY G BIV to list the colors of a rainbow, the letter "I" represents indigo. The name "indigo" comes from the plant that was originally used to make indigo dye. Because of indigo's location in the color spectrum, it is often referred to as blue-violet, which is just one of the four major tones of indigo.\n\nElectric indigo is the brightest and most saturated of the four shades. Its ..

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What are the basic parts of the brain structure?

The cerebrum is divided into two hemispheres which are joined by a band of fibers called the corpus callosum, says Innerbody. The hemispheres in turn are separated into four lobes. These are the frontal, parietal, temporal and occipital lobes. There's also a lobe called the limbic lobe, which is found in the middle of the cerebrum.\nThe thalamus and the hypothalamus are found in a part of the forebrain called the diencephalon, states Innerbody. The midbrain connects the diencephalon and part of the brain called the medulla oblongata. The midbrain has areas that control the way the eyes mo..

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What happens during a chemical change?

One example of chemical and physical changes that appear almost identical, both in the initial processes and their reversal, is the dissolution of salt and sugar in water. Dissolving salt is a chemical change, while dissolving sugar is a physical change due to the nature of salt versus sugar.\nSugar molecules are composed of highly covalent bonds, with each constituent atom bonded to another via shared electrons. Each sugar molecule is polar, however, and when these molecules encounter water, the polar water molecules pull individual sugar molecules out into solution. However, while the soluti..

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How does a fire tornado form?

About.com expert Rachelle Oblack explains that fire tornadoes are most likely to form when ambient wind speeds are mild. Once the tornado forms, however, its winds gain speed. Although most fire tornadoes are smaller than tornadoes, they are dangerous and capable of inflicting fire and wind damage. According to Fox6Now.com, fire tornado winds often equal those of mid-size tornadoes and are sufficiently powerful to knock down small trees, destroy power lines and damage buildings. Items touched by the flame column frequently burst into flames and become secondary sources of fire damage.\nFire to..

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