Daniel Gabriel Fahrenheit was a Polish physicist who invented one of the most familiar types of thermometers, which uses mercury in glass. Fahrenheit also had a temperature scale named after him.
Degrees of Temperature
The Celsius and Fahrenheit scales use degrees to measure temperature. For instance, water boils at 100 degrees Celsius and 212 degrees Fahrenheit.
The Kelvin scale does not use degrees. It uses the kelvin, abbreviated K, as a unit of measurement. Temperatures in kelvins are never read as degrees kelvin or kelvin degrees. Water boils at 373 kelvins.
hypothetical coldest possible temperature where all molecular motion stops (-273.16 degrees Celsius and -459.69 degrees Fahrenheit). Also called zero Kelvin.
force pressed on an object by air or atmosphere.
person who studies space and the universe beyond Earth's atmosphere.
(12-20 billion years ago) theoretical event where a small, dense, hot body of matter exploded, creating the expanding universe.
heat energy radiated by a person or other animal. Also called normothermia or euthermia. For humans, resting body temperature is 37 degrees Celsius or 98.6 degrees Fahrenheit.
to reach a conclusion by mathematical or logical methods.
smallest working part of a living organism.
scale for measuring surface temperature, used by most of the world, in which the boiling point of water is 100 degrees.
to shrink or get smaller.
to change from one thing to another.
to bring different sets of data into order, or establish a relationship or connection between them.
thermometer for measuring very low temperatures.
(singular: datum) information collected during a scientific study.
to reach a conclusion based on clues or evidence.
tool or piece of machinery.
to show or reveal.
flow of electricity, or charged particles, through a conductor.
device for measuring temperature electronically.
capacity to do work.
conditions that surround and influence an organism or community.
type of grain alcohol used as biofuel.
scale for measuring surface temperature used by Belize, Liberia, Myanmar, and the United States.
weak or barely detectable.
change, or motion from one point to another.
material, usually of plant or animal origin, that living organisms use to obtain nutrients.
at or below 0 degrees Celsius (32 degrees Fahrenheit).
state of matter with no fixed shape that will fill any container uniformly. Gas molecules are in constant, random motion.
energy that causes a rise in temperature.
activity that produces goods and services.
part of the electromagnetic spectrum with wavelengths longer than visible light but shorter than microwaves.
device for measuring temperature using infrared radiation.
to force something (usually a liquid) into a cavity or tissue.
scale for measuring temperature where zero Kelvin is absolute zero, the absence of all energy.
flammable liquid used as fuel.
state of matter with no fixed shape and molecules that remain loosely bound with each other.
substances that have liquid qualities, but whose molecules are arranged like a crystal. Liquid crystals are not a liquid form of a solid crystal.
unit of measurement (abbreviated m) determined by an object's resistance to change in the speed or direction of motion.
thermometer designed to display the highest temperature recorded between two settings.
process of determining length, width, mass (weight), volume, distance or some other quality or size.
having to do with the study of medicine or healing.
chemical element with the symbol Hg.
category of elements that are usually solid and shiny at room temperature.
series of standard weights and measurements used by most countries (except the United States, Liberia, and Burma) and throughout the scientific world. Also called the International System of Units or SI.
thermometer that measures temperatures in objects smaller than a micrometer.
person who studies the relationship between matter, energy, motion, and force.
device for measuring temperature that can be ingested.
to keep something from happening.
thermometer for measuring very high temperatures.
energy, emitted as waves or particles, radiating outward from a source.
electromagnetic wave with a wavelength between 1 millimeter and 30,000 meters, or a frequency between 10 kilohertz and 300,000 megahertz.
something that is left over.
to study, work, or take an interest in one area of a larger field of ideas.
metal made of the elements iron and carbon.
degree of hotness or coldness measured by a thermometer with a numerical scale.
electrical-resistance device whose resistance fluctuates with temperature.
device that measures temperature.
to pass along information or communicate.
able to be seen.