earth science 24 Flashcards
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
how do you calculate magnification
length of the focal point of the objective side divided by the focal point of the eyepiece.
explain how newtons telescope works
the light come in and bounces off a concave mirror to a focal point or small mirror and bounces out to your eyes.
what is the structure of the sun
solar interior,photosphere,chromosphere, and corona.
which layer of the sun can be thought of as the surface of the sun
photosphere
describe the characteristics of features on the sun
Its hot, has sunspots, has a core, and four parts
are the same number of susnpots always on teh sun
no becausein the 11 yeaer cycle their are maximums and minimums
how does the sun produce energy
through nuclear fusion
how much longer will the sun likely exist in its present state
100 billion years +
why are sunspots dark
because they are not as hot at the other surfaces on the sun
what is the effect on earths atmosphere of a strong solar flare
their could be an aurora borealis or a aurora australis
where are most observatorys
in the mountains
what happens about radio telescopse
it works even when it is cloudy
challenger
broke from fuel tank
columbia
it exploded on reentry
