Electromagnetic Spectrum
This form of radiation is the lowest energy form.
radio waves
What Sun feature is about 25 million degrees?
the core
binary
Every star begins as a ______.
protostar
This object magnifies the appearance of a distant object.
telescope
This type of radiation is dangerous and is used by doctors/dentists.
X-rays
This process in the Sun's core produces its energy.
nuclear fusion
Our Sun is an example of this type of star.
main sequence
Stars' life cycles vary based on this characteristic.
mass
This type of radiation is effective at heating up leftovers.
microwaves
The colors of sunsets are due to which radiation process?
scattering
This layer - the Sun's "surface" - is what we normally see.
photosphere
Although low in temperature, these large stars are very bright.
red giants
If a star is not very bright but appears to be from earth, it has a high _______ magnitude.
apparent
This molded piece of glass allows for magnification of distant objects.
lens
As wavelength increases, what happens to energy?
decreases
This layer of the Sun is comparable to a crown and is its outermost layer.
corona
The hottest of stars will give off these colors.
purple/blue
The hottest main sequence stars tend to be ___________.
brightest
Nebulae and early stars are primarily composed of this gas.
hydrogen gas
This atmospheric feature protects us from UVC radiation.
ozone layer
Polar regions - like Alaska and Antarctica - are most likely to experience this mesmerizing Earth-Sun feature.
stellar parallax
Stellar temperature and brightness are graphed on this diagram.
Hertzsprung-Russell ("H-R")
Stars maintain their spherical shape due to this phenomenon.
hydrostatic equilibrium