earth science 24 Flashcards
(40 cards)
name the electromagnetic spectrum from longest wavelenghts to shortest
radio, infrared visible, ultraviolet, xray, and gamma rays
what are the three types of seismic waves
P wave, s wave, surface waves
as the waves get longer what happens ot the frequency
gets lower, inverse relationship for opposite.
what are the two parts of light
photons and waves
if the wavelength is longer the amount of energy is….
if its longer the amount of energy is…..
As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter.
which energy is dangerous for us
ultraviolet lights
instruments that allow scientists to determine the chemical makeup of a visible source of light.
spectrascope
what is the doppler effect
when something is coming towards you the wavelength is shorter and pitch is higher, when something is going away it is longer and lower.
what color waves are shorter and longer for stars. which color moves toward and away form us?
blue waves are shorter coming toward. while red are longer. red is going away.
what are the three types of spectrums
continuous absorption and emission spectrum.
the point, or plane, at which light rays from infinity converge after passing through a lens and traveling a distance of one…..
focal point
who invented the telescope
galileo galilie
who concluded that the universe is expanding
hubble.
what does a refracting telescope have lens or mirror?
lens
what was the problem with reflecting telescope
it made a chromatic abberation
who made a reflecting telescope
newton
what is a concave and what is a convex mirror.
concave focuses light. convex makes an image bigger
what is chromatic abberation
a common optical phenomenon that occurs when a lens cannot bring all wavelengths of light to a single converging point.
where does a person stand in a reflecting telescope to look into it
at the side of the telescope
what is the advantage of reflecting telescopes
there is no aberations
What does a plane mirror do.
creates an image that is of the same size as the object, and which is a virtual and erect image.
what does a concave mirror do
helps in converging the light from a far-off object to a point. image appears larger than the actual object and is upright
what does a convex mirror do
the most common convex mirror uses are in places where bigger objects are to be viewed in a smaller size.
how do you make the zoom bigger
make the objective side of the telescope longer
