what is temperature?

Answer 1

A measurement of the speed that the molecules are moving inside of a substance. If the molecules inside of the objects are moving very slow then the substance is cold, if the molecules are moving fast then the substance is hot.

The scale used to measure temperature is Celsius, for the SI or Standard Units and Fahrenheit for the US and England. For extremely low temperatures like that of liquid oxygen a lower Celsius scale called Kelvin is used.

In ice, a solid, the molecules are hardly moving; they are locked in a crystal grid. In water the molecules are moving faster and can float freely, so water is warmer than ice. If you boil that water then the molecules are moving so fast that some of them escape into the air becoming a gas; water vapor. So boiling water is much hotter than liquid water.

The fourth state of matter is Plasma, which is hotter than any gas. It has different properties than a gas that makes it seem like a infinitely flexible solid. Plasma is at an extremely high temperature. The hottest cutters used in industry are plasma cutters; which use a jet of super heated plasma to cut metal.

According to Wikipedia: http://en.wikipedia.org/wiki/Temperature
“Temperature is a physical property of a system that underlies the common notions of hot and cold; something that is hotter has the greater temperature. Temperature is one of the principal parameters of thermodynamics. The temperature of a system is defined as simply the average energy of microscopic motions of a single particle in the system per degree of freedom. For a solid, these microscopic motions are principally the vibrations of the constituent atoms about their sites in the solid. For an ideal monatomic gas, the microscopic motions are the translational motions of the constituent gas particles. For multiatomic gas vibrational and rotational motion should be included too.

Temperature is measured with thermometers that may be calibrated to a variety of temperature scales. In most of the world (except for the United States, Jamaica, and a few other countries), the Celsius scale is used for most temperature measuring purposes. The entire scientific world (the U.S. included) measures temperature using the Celsius scale, and thermodynamic temperature using the Kelvin scale (which is just a simple shifting of the Celsius scale). Many engineering fields in the U.S., especially high-tech ones, also use the Kelvin and Celsius scales. The bulk of the U.S. however, (its lay people, industry, popular meteorology, and government) relies upon the Fahrenheit scale. Other engineering fields in the U.S. also rely upon the Rankine scale (a shifted Fahrenheit scale) when working in thermodynamic-related disciplines such as combustion.”

The included graphic shows the molecular movement.

Absolute zero is the point when ALL molecular movement stops. It is impossible to reach, and deep space is 2-4 degrees Kelvin above absolute zero. The left over radiation from the big bang warms all of space to this temperature.

A calorie is a measure of heat. If you burn food in the body then you are burning calories. To measure the calorie content of food scientists burn the food with fire and measure the heat produced.

According to Wikipedia: http://en.wikipedia.org/wiki/BTU
“The British thermal unit (BTU or Btu) is a unit of energy used globally in the power, steam generation and heating and air conditioning industries. Although it is in common use in these industries, in scientific use it has been replaced by the SI unit of energy, the joule (J).

In North America, the term "BTU" is used to describe the heat value (energy content) of fuels, and also to describe the power of heating and cooling systems, such as furnaces, stoves, barbecue grills, and air conditioners. When used as a unit of power, BTU per hour (BTU/h) is understood, though this is often confusingly abbreviated to just "BTU". In the UK and other parts of the world it is written BTU.”

Answer 2

Temperature is simply a measurement of heat.

Answer 3

1. degree of heat: the degree of heat as an inherent quality of objects expressed as hotness or coldness relative to something else
2. relative degree of heat: the heat of something measured on a particular scale such as the Fahrenheit or Celsius scale.
3. body heat: the degree of heat in a living organism
4. fever: human body heat in excess of 37.0° C/98.6° F or somebody’s normal body heat
running a temperature

Answer 4

Temperature is the degree of measure of hotness or coldness of an object.
It has three main scales they are kelvin, celsius and fahrenheit.

Answer 5

a means of measurement of thermal heat units

Answer 6

How hot or cold something is