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Definition: Heat is the non-mechanical transfer between objects at different temperatures.

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Radiation is something that warms something up like when you make something with water theirs always a radiation under your pan or what is warm like a fire pit.

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Definition: the range of all possible frequencies of electromagnetic radiation

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Electromagnetic Spectrum - The electromagnetic spectrum describes the various types of electromagnetic radiation based on their wavelengths.

Radio, representing wavelengths from a few feet to well over a mile, is at one end of the spectrum. Gamma ray radiation is at the other end: the wavelength of the harder types is so short, in the subatomic range, that we do not have instruments capable of directly measuring it.

While the above classification scheme is generally accurate, in reality there is often some overlap between neighboring types of electromagnetic radiation. For example some low energy gamma-rays actually have a longer wavelength than some high energy X-rays.

This is possible because "gamma-ray" is the name given to the photons generated from nuclear decay or other nuclear and subnuclear processes, whereas X-rays on the other hand are generated by electronic transitions involving highly energetic inner electrons. Therefore the distinction between gamma-ray and x-ray is related to the radiation source rather than the radiation wavelength.

Generally, nuclear transitions are much more energetic than electronic transitions, so most gamma-rays are more energetic than x-rays. However, there are a few low-energy nuclear transitions (eg. the 14.4 keV nuclear transition of Fe-57) that produce gamma-rays that are less energetic than some of the higher energy X-rays.

Use of the radio frequency spectrum is regulated by governments. This is called frequency allocation.
Radio Waves
Radio is at the weak end of the spectrum, with low energy and long wavelength. It's used for transmission of data, via modulation. Television, mobile phones, wireless networking and amateur radio all use it.
Microwaves
Microwaves come next. They can cause entire molecules to resonate. This resonance causes water to move rapidly and enables the microwave oven to cook food.

Between 300 GHz and the mid-infrared, the absorption of electromagnetic radiation by molecular vibration in the Earth's atmosphere is so great that the atmosphere is effectively opaque to electromagnetic radiation, until the atmosphere becomes transparent again in the so-called infrared and optical window freqency ranges. However, there are certain wavelength ranges ("windows") within the opaque range which allow partial transmission, and can be used for astronomy.

It should be noted that the average Microwave oven is, in close range, powerful enough to cause interference with poorly shielded electromagnetic fields such as those found in mobile medical devices and cheap consumer electronics.
Infra-red Radiation
The next category is infra-red. This makes chemical bonds resonate. When a chemical bond resonates, the vibrations add internal energy to the molecule. The molecule becomes hot. The bulk substance becomes hot when its molecules' bonds are all resonating. When you touch it, you feel its warmth or you lose the tip of your finger, depending on how violent the resonance is.
Visible radiation (light)
After infra-red comes visible light. This is the range in which the sun and stars similar to it emit most of their radiation. When this is scattered or reflected by an object, we can infer the existence of the object. I can see the light scattered from my room's light by my keyboard, so my brain infers that the keyboard exists.
Ultraviolet light
Next comes ultraviolet. This is radiation whose wavelength is shorter than the violet end of the visible spectrum. It was discovered to be useful for astronomy by a Mariner probe at Mercury, which detected UV that "had no right to be there". The dying probe was turned over to the UV team full time.

The UV source turned out to be a star, but UV astronomy was born. Being very energetic, UV can break chemical bonds. Chlorine will not normally react with an alkane, but give it UV and it reacts quickly. This is because the UV breaks the bond holding chlorine atoms into molecules of Cl2. Lone atoms are extremely reactive and will react with the otherwise almost-inert alkanes. It also makes a mess of DNA, causing cell death at best and uncontrolled cell reproduction (cancer) at worst.
X-rays
After UV come X-rays. Hard X-rays are of shorter wavelength than soft X-rays. X-rays are used for seeing through some things and not others, as well as for high-energy physics and astronomy. Black holes and neutron stars emit x-rays, which enable us to study them.
Gamma rays
After hard X-rays come gamma rays. These are the most energetic photons, having no lower limit to their wavelength. They are useful to astronomers in the study of high-energy objects or regions and find a use with physicists thanks to their penetrative ability and their production from radioisotopes.

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Electromagnetic Spectrum - The electromagnetic spectrum describes the various types of electromagnetic radiation based on their wavelengths. Radio, representing wavelengths from a few feet to well over a mile, is at one end of the spectrum. Gamma ray radiation is at the other end: the wavelength of the harder types is so short, in the ...

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The amount of heat moving through another medium

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Smaller unit of heat energy.

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energy thats not being uesd is being stored.

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Definition: degree/intensity of heat in a substance

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A process that measures the heat of chemical reactions or physical changes

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Conduction is the process in which heat travels through objects

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The amount of energy(heat) required to raise the temperature of one gram of water one degree celsius.

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The work needed to accelerate a body of a given mass from rest to it's stated velocity

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The coldest possible temperature and is 0 kelvin

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Law of Conservation of Energy     >Katie Fochs<

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Law of Conservation of Energy     >Katie Fochs<

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States that the total amount of energy cannot be created or destroyed; it just changes forms.

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Invisible radiation that is part of the electromagnetic spectrum.

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the portion of the electromagnetic spectrum between x-rays and visible light

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Everything about summer seems to suggest a carefree lifestyle. It's a time for beaches and barbeques, volleyball and vacations, swimming and sun. It's when we shrug off the rubber rain gear of spring and completely forget things like heavy winter coats and sweaters. With the sun shining, the chill of fall feels like a lifetime away.

However, there is danger that exists outdoors even during this happy season. The danger is strongest during those seemingly innocent sunny days of summer, and it's inescapable. It's there during every trip to the beach, every walk in the park, every picnic with the family. It goes on vacation with us. It even hides behind the clouds on rainy days.

It's the danger of ultraviolet, or UV, radiation.

If you're like a lot of people, you may find concerns about UV radiation easy to dismiss. You might think that you don't have to worry about wrinkles until you're older, or that getting a "base tan" is a must to prevent serious sunburn. It's possible you even believe that tanning in a tanning bed is perfectly safe, because you think it's the sun that does the worst damage [source: Gibson].

If any of those statements apply to you, the truth about UV radiation will probably come as a surprise. There's a difference between UV radiation and sun exposure, and many people still have yet to learn whether they are taking the right preventive measures to protect themselves against long-term damage. In fact, most don't even know what exactly they need to protect themselves from.

To dispel any uncertainty about what UV radiation is and isn't, read on to the next page, where you'll find out why UV radiation is both necessary and dangerous.

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Everything about summer seems to suggest a carefree lifestyle. It's a time for beaches and barbeques, volleyball and vacations, swimming and sun. It's when we shrug off the rubber rain gear of spring and completely forget things like heavy winter coats and sweaters. With the sun shining, the chill of fall feels like a lifetime away.

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The transfer of energy between molecules

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Measures very high and very low temperatures.

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An insulator is something that energy(heat)cant pass through.

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The amount of heat needed to raise temperature of a specific object by one degree.

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Put your definition here, should include a picture or video