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Why does a piece of iron appear red when heated sufficiently and blue at a higher temperature?
It has to do with something called black body radiation. As something gets hotter, the wavelengths of light the it emits get smaller and smaller, which means that the color goes from red to blue.
Look at the Wikipedia chart of color versus temperature to see the color variation as things get hotter and hotter.
Also look at the MHHE.com applet program. On this site, you can change the temperature manually and watch what happens to the spectrum of the light that is emitted.
See the Web Links to the left for more information about black body radiation and how it works.
What else can I help you with?
When oil is heated then temperature would be?
Higher, I suppose.
Do particles vibrate slower when heated?
No, particles actually vibrate faster when they are heated. This increase in vibration is due to the higher energy levels associated with the increase in temperature.
Will the temperature go higher or lower if you add salt to the water?
Adding salt to water will lower the freezing point and raise the boiling point of the water, but it will not directly affect the temperature at which the water is heated or cooled.
Which has higher temperature steam or water boling in kettle?
Steam. The reason for this is water boils at the temperature of 212 degrees F. Steam can be heated to much higher temperatures than that. Some engines that are water cooled has steam at temperatures of over 700 degrees. Water basically becomes a plasma at this temperature.
How does pressure and temperature affect gas changing into a liquid?
Increasing pressure and decreasing temperature can cause a gas to condense into a liquid. This happens because higher pressure brings gas particles closer together, while lower temperature reduces the kinetic energy of the particles, making them move more slowly and allowing them to come together and form a liquid.
When oil is heated then temperature would be?
Higher, I suppose.
Does the heated tennis ball go higher or the room temperature or the frozen one?
The heated, then the room temperature, then the frozen ball. It's the heated because of how fast the molecules are moving. :)
What does water evaporate when heated?
At higher temperature the continuous movement of water molecules is accelerated.
Does temperature affect whether or not a spectrum shows?
Temperature does affect whether or not a spectrum shows up and how. The higher the temperature is, the more red the spectrum will appear, while the cooler it is, the more blue it will appear.
Do particles vibrate slower when heated?
No, particles actually vibrate faster when they are heated. This increase in vibration is due to the higher energy levels associated with the increase in temperature.
Will the temperature go higher or lower if you add salt to the water?
Adding salt to water will lower the freezing point and raise the boiling point of the water, but it will not directly affect the temperature at which the water is heated or cooled.
Why does hot cocoa have a higher temperature than a cold milk?
Hot cocoa has a higher temperature than cold milk because it contains added ingredients such as cocoa powder, sugar, and possibly milk or cream that increase its overall temperature when heated. Heating causes the molecules in the cocoa mixture to move faster, resulting in a higher temperature compared to cold milk, which hasn't been heated.
Is Boiling is the maximum temperature a substance can reach?
Boiling is the temperature at which a substance changes from a liquid to a gas. It is not necessarily the maximum temperature a substance can reach, as some substances can be heated to higher temperatures without boiling.
How does the temperature of a soccer ball affect how far you can kick it?
Yes it does affect it cold does not go as far as a heated ball
What happens when the temperature of a substances changes?
When the temperature of a substance changes, the amount of random thermal motion on a molecular or atomic level changes accordingly; higher temperature means faster motion. A sufficient amount of temperature change will also result in a phase change. Cooling liquids freeze, heated liquids boil, heated solids melt, and so forth.
How does temperature affect molecules in liquids?
Molecules in a liquid are engaged in random thermal motion; they move around at random, bouncing off each other constantly. The temperature measures the amount of this motion. At higher temperatures, they are moving faster. At lower temperatures they move more slowly. Of course, at some point you also get phase changes. Increase the temperature sufficiently and the liquid will boil; decrease it sufficiently and (with the exception of helium) it will freeze.
Which has higher temperature steam or water boling in kettle?
Steam. The reason for this is water boils at the temperature of 212 degrees F. Steam can be heated to much higher temperatures than that. Some engines that are water cooled has steam at temperatures of over 700 degrees. Water basically becomes a plasma at this temperature.
