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Why do substances contract when they cool?
Water. Ice expands.
How does heat cause ocean currents?
Warm water expands and rises, cool water contracts and sinks.
Surface temperature of betelgeuse?
Surprisingly perhaps, it is fairly cool for a star. Betelgeuse is a red giant, meaning it is reaching the end of its life. When a star like our sun, a moderate Main Sequence Star begins to run out of fuel, there is a reaction in the collapsing core that briefly (in the lifetime of a star..briefly can be millions of years) causes the outer layers to expand outward. The gases cool off as they move farther from the core. Red light holds the least energy, which is why the star's outer layers turn red. It is also the coolest light. Our sun will one day become a red giant like Betelguese, and its outer layers will expand far enough to engulf Mars. One day, Betelgeuse will loose its outer layers in a nova, and all that will be left will be a white dwarf core. Look up the Hertsprung-Russell diagram and you'll get more exact temperatures for red giants, but red stars of any type are the coolest.
Does water continue to expand as it cools after forming ice?
Water expands when it first freezes, but after that ice will contract as it continues to cool.
What happens to a solid when its cooled?
It depends on what the solid is made out of. Most solids shrink when cooled, and become more brittle. There are exceptions, however, such as ice, which expands slightly at certain temperatures.
What is true of the layers of a star?
the inner layers are very cool, the outer layers are somewhat cool
Is a red giant a main sequence star?
No, a red giant is a star that has just left the hydrogen burning main sequence and begun the next step, burning helium. As helium undergoes fusion at a much higher temperature than hydrogen undergoes fusion, the star expands dramatically and as it expands its outer layers cool to red heat.
What temperature will the sun have when it gets really old?
As the sun expands late in it's life, it's outer shell will gradually cool and become redder. The sun's surface temperature right now is about 11-12,000 degrees Fahrenheit. It will gradually cool to about 5,600 - 6,000 degrees Fahrenheit toward the end of it's life.
Why do substances contract when they cool?
Water. Ice expands.
What is onion skin weathering?
Onion skin weathering is a Geological process that happens mainly in deserts. As the rock heats up and expands by day, and cools and contracts by night, stress is often exerted on the outer layers. The stress causes the peeling off of the outer layers of rocks in thin sheets. Though this is caused mainly by temperature changes, thermal expansion is enhanced by the presence of moisture. Onion skin weathering has to do with rocks mostly in the desert. It is when the hot temperature of the day is then reduced to a cold temperature at night. This change in temperature causes layers of the rock to peel off like onion skin coming off. Therefore it is called onion skin weathering. Conclusion: Onion skin Weathering is when a rock heats up and expands (mostly deserts) And at night it cool and contract and layers of skin peels off
Will the sun cool down?
Stars like our Sun expand as they grow old. As their core runs out of hydrogen and then helium, the core contracts and the outer layers expand, cool, and become less bright. This is a red giant, It will eventually collapse and explode. Stars like our Sun live for about 10 billion years.
What is really cool about water?
Water is the only liquid that expands when frozen.
When air rises does it cool down?
Yes. (As the density falls, it expands.)
What expands when heated?
metal is a solid that expands when heated also of course when liquids are heated and change state into a gas they expand but metal is cool because it expands before it changes state
Matter expands when its gets hotter and contracts when it cool?
The explanation of Thermal Expansion.
Medium size stars in the red giant phase become what?
After the Red Dwarf phase, the life of the star ends. It begins to shed its outer layers into a cloud, called a planetary nebula, until only about 20% of the star's mass remains. The star will then continue to cool and shrink until it becomes a White Dwarf.
What is the state of earths outer core?
cool stuff
