Light
Spectroscopy
Telescopes
The Sun
Terms
100
________________ helps us determine if a star is moving toward us or away from us
Doppler Effect
100
another name for all forms of the array of energy is
electromagnetic radiation
100
the first scientist to use a telescope to observe celestial bodies
Galileo
100
sunspots occur on a _____________ cycle
11-year
100
the outer, tenuous layer of the solar atmosphere
corona
200
Light behaves as both ____________ and __________
waves and particles
200
We can learn what elements are present in stars using their __________________ spectrum
absorption line
200
The Hubble Telescope is a _____________ telescope
Reflector
200
The sun is fueled by _________ __________ where 4 _________ atoms become 1 ______ atom.
Nuclear fusion, hydrogen, helium
200
the number of crests or troughs that pass a given point in a unit of time
frequency
300
arrange the following colours in order from shortest to longest wavelength: Green, Yellow, Red, Blue, Orange, Violet
violet, blue, green, yellow, orange, red
300
a common light bulb emits a __________ spectrum
continuous
300
What type of telescope uses the bendable property of light?
Refracting Telescopes
300
Galileo observed ___ ____ on the "surface" or ______________ of the sun
sun spots, photosphere
300
in which spectral lines are shifted toward the shorter wavelengths
blue shift
400
What determines the wavelength of light?
How much energy its source has
400
every element, when incandescent, emits a unique _________________ spectrum
emission line
400
What are 5 reasons that radio telescopes are better than optical telescopes?
Can be used 24 hrs a day, less expensive, detect invisible stuff, radio wavelengths penetrate all the way down to earth's surface without atmospheric interference, can "see" through interstellar dust clouds
400
The lower level of the Sun's atmosphere is called the
Chromosphere
400
subatomic particles ejected at high speeds from the solar corona
solar wind
500
As energy increases, what happens to temperature, luminosity, and wavelength?
Temp increases, luminosity increases, and wavelength decreases
500
I heated up a frying pan till it was glowing red hot. What would happen if i heated it up even more?
the colour would become brighter and whiter
500
The biggest optical telescopes are ____________ telescopes.
Reflector
500
The most explosive events on the Sun
Solar Flares
500
a concentration of material above the solar surface; bright, archlike structures
Prominence