An emission spectrum that consists of a continuum of wavelengths.
A spectrum of the electromagnetic radiation emitted by a source
A spectrum of electromagnetic radiation transmitted through a substance, showing dark lines or bands due to absorption of specific wavelengths.
An opaque object that emits thermal radiation.
An objective comparative measure of hot or cold.
Energy that spontaneously passes between a system and its surroundings in some way other than through work or the transfer of matter.
The number of occurrences of a repeating event per unit time.
An increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other.
The branch of science concerned with the investigation and measurement of spectra produced when matter interacts with or emits electromagnetic radiation.
The lowest temperature that is theoretically possible
The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization
The distance between successive crests of a wave
Can be characterized by either the frequency or wavelength of their oscillations, which determines their position in the electromagnetic spectrum
The bending of a wave when it enters a medium where its speed is different
States that the black body radiation curve for different temperatures peaks at a wavelength inversely proportional to the temperature.
It is defined such that the triple point of water is exactly 273.16 K.
A scale and unit of measurement for temperature
A temperature scale based on one proposed in 1724
Measure of its change over a single period
Refers to visible light
Top of wave in wavelength
Bottom of wave in wavelength
A condition that is not limited to a specific set of values but can vary infinitely within a continuum.
A physical constant that is the quantum of action, central in quantum mechanics.
American astronomer that was able to observe that almost all galaxies seemed to be moving away from the Earth.
is a theory offered by cosmologists related to the early development of the universe.
spreading out of light as it passes the edge of an obstacle.
the change in wavelength of sound or light emitted by an object in relation to an observer’s position.
negatively charged elementary particle found outside, but is attached to, the nucleus of an atom.
the number of wave crests or troughs that pass a particular point in a given interval of time.
the highest energy, shortest wavelength form of electromagnetic radiation.
a form of light with slightly lower energy than visible light but with greater energy than radio waves.
the principle that a distant galaxy’s recessional velocity is proportional to its distance from Earth.
a subatomic particle with no electric charge that resides in an atomic nucleus.
a piece of glass that breaks white light into it’s basic colors, it is wedge shaped.
subatomic particle that is found in an atom’s nucleus and possesses a positive electric charge.
type of light with the longest wavelength with the least energy.
multiplication of wavelength of light coming from an object due to its motion away from earth; expansion of the universe.
instrument used to brighten and magnify the view of astronomical
distance between two wave crests.
the world's premier astronomical radio observatories, consists of 27 radio antennas in a Y-shaped configuration.
radiation with a higher amount of energy than visible light, not as much as x-rays.
is the thermal radiation left over from the time of recombination in Big Bang cosmology.
having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves. Infrared radiation has a wavelength from about 800 nm to 1 mm, and is emitted particularly by heated objects is what type of wave ?
a wave of energy with a frequency within the electromagnetic spectrum, generated by the periodic fluctuation of an electromagnetic field resulting from the acceleration or oscillation of an electric charge. Electromagnetic waves can be reflected, refracted, and polarized, and exhibit interference and diffraction effects which is what type of wave ?
energy emitted as waves, usually electromagnetic waves, through space or some other medium is what type of energy ?
the range of wavelengths or frequencies over which electromagnetic radiation extends, is what type of spectrum ?
an electromagnetic wave of a frequency between about 104 and 1011 or 1012 Hz, as used for long-distance communication is a ?
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm, which is ?
UV radiation: Ultraviolet radiation. Invisible rays that are part of the energy that comes from the sun, can burn the skin, and cause skin cancer. UV radiation is made up of three types of rays -- ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC) all of these examples are what types of radiation ?
an electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light is what exactly ?
penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei are what type of rays ?
a high-frequency electromagnetic wave modulated in amplitude or frequency to convey a signal is which type of wave ?
an accurate worldwide navigational and surveying facility based on the reception of signals from an array of orbiting satellites is what ?
the mnemonic to help you remember the colors of the visible spectrum low to high frequency
bending of light
number of waves in a period
wavelength times frequency
Wave on the electromagnetic spectrum with highest frequency
wave on the electromagnetic spectrum with the longest waves
Height of a wave from crest to midline
distance between two wave crests or troughs
Light given off from certain living things that have the ability to chemically excite the molecules in their bodies.
Characteristic of objects that is caused by different qualities of light being reflected or absorbed by them.
Bending of a wave around a barrier.
Separation of light into colors arranged according to their frequency.
Ability to do work. The scientific definition of work is moving something over a distance.
Electromagnetic waves with frequencies lower than the red in the visible light spectrum.
An optical instrument that produces a beam of coherent light, with waves of the same frequency, phase, and direction.
Excluding nuclear energy, energy cannot be created or destroyed, only changed.
A piece of glass or other transparent material that can bend parallel rays of light so that they cross or appear to cross at a single point.
A form of radiant energy.
Process of green plants using sunlight as the energy source to combine carbon dioxide and water to produce sugar and oxygen.
A shaded area resulting when light is blocked out by an object in its path.
The spread of radiation by frequency.
Electromagnetic waves above the frequency of violet light in the visible spectrum.
The spread of colors seen when light passes through a prism or diffraction grading.
The direct transfer of energy by electromagnetic waves.
The transfer of thermal energy by the movement of fluid.
The distance from the rest position to the crest position which is half the vertical distance from a trough to a crest.
Waves that transfer electric and magnetic energy through the vacuum of space and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
The size of a surface wave.
The transfer of thermal energy from one object to another because of a difference in temperature.
The circulation of a fluid as it alternatively heats up and cools down.
The direct transfer of thermal energy from one substance to another that it is touching.
Electromagnetic waves with wavelengths that are shorter then visible light but longer than x-rays.
The quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone.
The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
Energy of Motion.
Electromagnetic waves with wavelengths that are longer than visible light but shorter than microwaves.
The total energy of motion in the particles of a substance.
The process by which heat is trapped in the atmosphere by gases that form a "blanket" around Earth.
The number of waves passing a point in a certain time. Usually measured in a wave per second and in the unit of hertz (Hz).
The colors in the spectrum of a side moving toward earth are shifted slightly toward blue.
A star that suddenly becomes brighter.
An observed change in the frequency of a wave when the source or observer is moving.
A large celestial body that is composed of gas and that emits light.
14 billion years ago, a sudden event that sent all matter and energy outward in all directions.
The coldest temperature possible.
Nightly luminous stars from main sequence stars that are more massive than the sun, which becomes larger than giants in their third stage.
A large cloud of gas or dust in interstellar space; a region in space where stars are born.
an object so massive and dense that even light cannot escape its gravity.
Pair of stars that revolve around each other and are held together by gravity.
A collection of stars, dust, and gas bound together by gravity.
The total amount of energy stars give off each second.
The brightness of a star as seen from earth.
The study of the origin, properties, and evolution of the universe.
A spiral galaxy in which the sun is one of hundreds of billions of stars.
A means of transferring energy from one point to another
Particles on the wave vibrate perpendicular to the direction that the wave is moving
Particles on these waves vibrate parallel to the direction that the wave is moving (through a series of compressions and rarefactions)
Require a medium to travel through (Ex: water waves and sound waves)
Do not require a medium (ex: light and radio waves)
The distance from a point on one wave to the identical point on the next wave (crest to crest)
The number of waves passing each second; it is measured in Hertz
Maximum displacement of a wave from the rest position or the size of the wave or how large the wave is
Waves will bounce off barriers an angle equal to the angle they strike the barrier
Bending of a wave as it passes at an angle into another medium
Bending of waves around barriers (this occurs to a greater degree with longer waves such as sound)
Waves add as they meet
The waves partly or completely cancel as they pass
Change in frequency is heard when the source of sound and the person receiving the sound are in relative motion
material through which a wave travels
Unit of measurement for frequency
a disturbance that travels through a medium as a longitudinal wave
perception of the frequency of sound
The high point of a wave.
The low point of a wave