What is a constant in science?

Answer

In an experiment following the scientific method, a constant is a variable that cannot be changed or is purposely not changed during the experiment. Some constants are purposeful and selected by the scientist to control an experiment while others are more universal and beyond a researcher's control.

Any experiment conducted according to the scientific method will have constant variables and experimental variables. Experimental variables are those variables a scientist chooses to change so she may study the effects of the change. Constants are variables that are kept the same to ensure all effects being studied and measured are the result of an experimental variable. If a researcher wanted to study the effects of temperature on the growth and development of garden snakes, the experimental variable for the experiment would be temperature. All other variables would need to remain consistent to avoid invalid data. The size of the cage, amount of light, food and many other variables would need to remain constant to ensure accurate results and a valid study. Those variables are constants. Some variables are not under a scientist's control, but are still considered to be constants. These constants are called universal constants and include gravity, the speed of light and electronic charge. Universal constants do affect experiments but will be constant through an experiment without being controlled by the scientist.

Q&A Related to "What is a constant in science?"
Constants, also known as controlled variables, are elements that are carefully monitored to ensure that they stay the same across all the experimental groups. Having constants in
http://www.ehow.com/facts_5977760_constant-science...
Some examples of constants include the following: Avogadro's number, which is 6.022 x 10. 23. of anything. Speed of light in a vacuum, which is exactly 299,792,458 m/s. 1 mole of
http://wiki.answers.com/Q/What_are_examples_of_con...
A number representing a quantity assumed to have a fixed value in a specified
http://www.chacha.com/question/what-is-a-constant-...
This question is basically answered here in a different context. The speed of light is not really about light per se but about the metric of four dimensional spacetime, which we
http://www.quora.com/Physics/Why-do-science-books-...
Explore this Topic
A constant in a science experiment is a controlled variable or element that is closely monitored to make sure that it remains steady state. It is supposed to prove ...
In science, a constant variable is a factor that does not change during the course of the particular experiment. In an experiment on the decay of a fruit, an apple ...
Constant in Science is also known as variables. It refers to the elements that are carefully monitored to ensure that they stay the same across all the experimental ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com