water density and temperature
What would be the constant variable and the changing variable in this experiment.?
My experiment is mixing hot and cold water to see if they would mix or not. They don’t due to different densities.
there is a two cups of hot and cold water, and then i mix them, but they don’t mix.
so what would be the constant variable and changing variable?
would it be the water/temperature/density..?
the constant variable is the stuff you keep the same.
It would be the temperature of the room, the amount of water, the type of water, etc.
the changing variable is the one thing you change on purpose.
It would be the temperature of the water.
water density and temperature

Astronomers discover water planet only 40 light years from Earth – the water planet, water, water in the world – water industries
Water Industry Network HC : Beijing December 17, according to the British “Daily Mail” reported that the astronomers found a dark star operation around the terrestrial planets, only 40 light years from Earth. It is a hot “water world”, 6 times the size of the Earth. It is believed that 75% of the planet’s surface area is covered with water, but the temperature is too high, it can not support the existence of Earth-type life. There is evidence that the “water world” have the same atmosphere. Astronomers think the planet outside the solar system and had discovered more than any extrasolar planets close to Earth. An operation around a dark star terrestrial planets
Fengyun water planet is classified as “super-Earth” the ranks of such size in the earth, and smaller rocky planets Uranus, Neptune, etc. between the ice giants. Although its parent star is a dim red dwarf star, the brightness of the sun 1/3000 only, but short distance between the two Yeomans water planet’s surface temperature as high as 200 degrees Celsius. Water planet and the distance between the parent star is only 1.3 million miles (about 2.09 million kilometers), orbit around the parent star only needs 38 hours a week. Fengyun around the red dwarf star GJ1214 planet is found in a small array of ground-based telescopes, the telescopes used by amateur no better than a lot of big. MEarthProject plans to use eight 16-inch diameter, the same (about 40 cm) telescope to monitor 2000 red dwarf star. Red dwarf stars in the Milky Way the most common type. Red dwarf star telescope by observing the change of brightness that a planet across its front. Because too dim, red dwarf star itself raised the possibility of planets found in this way. Caused by measuring the brightness of the planet through reduced, scientists can calculate a planet’s density and its components are based on speculation. New planet named “GJ1214b”, believed to three-quarters of the surface area covered by water and ice, leaving only about one quarter of the regional rock. Harvard – Smithsonian Center graduate students, astronomers, Charles Kerry? Berta found Fengyun water planet. He said: “Although the temperature is high, it is still a water world. And other than any known extrasolar planets, planet, smaller, cooler and closer to the Earth.” Scientists believe that in addition to GJ1214b surface, a number of things must block the light from the parent star, its surrounding could be a form of hydrogen and helium atmosphere. With the Hubble Space Telescope, astronomers may determine the composition of the planet. MEarthProject, David? Charbonneau said: “The planet Earth is very close, ‘Hubble’ should be carried out on the atmosphere Probe And determine its composition. With luck, it will be the first to have a super-Earth atmosphere has been confirmed, although the atmosphere may be life as we know is not friendship. ” 16 today’s issue of “Nature” magazine reported the discovery. In the published in “Nature” article, the famous planet hunter, the University of California, Jeffrey? Professor Ma Xi may be present in this water world scene was speculation. He wrote: “It may have a high depth of the ocean, the liquid should be presented. As the heat given to the mother star, its surface temperature reaches 190 degrees Celsius. Also, a steam sauna like atmosphere may exist.”
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Why and how is the sinking rate of an object correlates to the temperature of water??
I need to know how and why things sink slower/faster in different temperature water. please explain using viscosity and density in your explaination.
Explaining using scientific laws or theories would be much appreciated!!
هاى انا اسمى سيف وانا سعيد ان انا معاكو واللى ليه شوق فى حاجه يجى وسلام
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