Space
Many stars belong to larger groups called what?
star cluster
What is the doppler effect?
an increase/decrease in the frequency of sound, light, or other waves as the source and observer move toward or away from each other.
What is Newton's 3rd Law?
law of action/reaction
What is the chromosphere?
a reddish and glowing layer of gas above the sun's photosphere visible during a solar ellipse.
What is the periodic table?
a chart that organizes information about all the known elements according to their properties
Gravity pulled most of the gas into the center of the disk, where the gas eventually became hot and dense enough for nuclear fusion to begin and what was born?
The Sun
When observed wavelengths of light are longer than the emitted wavelengths of light is
red shift
What is force?
Push or Pull
The convection zone is the _ layer of the solar interior.
outer
What are valence electrons?
electrons that are located in the outermost energy level of an atom
A dying high-mass star can suddenly explode, becoming a what?
super nova
When observed wavelengths of light are shorter than emitted wavelengths of light is called
blue shift
What is Potential energy?
stored energy
The _ is the very center of the sun, where temperatures and pressures are so high that fusion can happen here.
core
The periodic table is broken down into how many blocks_____? The names of those blocks are ___ . The first group on the table are the ____ group. The second group on the table is called the ___ group.
4
s p d f.
alkali metals
alkaline earth metals
The brightness of a star as seen from Earth is called what?
apparent brightness
What are the three types of spectra/spectrum?
continuous emission absorption
What is kinetic energy?
energy in motion
An aura of plasma that surrounds the Sun and other stars. The Sun's _ extends millions of km into outer space.
Corona
What is an atom?
basic building block of all matter
Parallax is used to determine a star’s
Distance from Earth
What are the two main types of waves?
transverse and longitudinal
the sum of all forces acting on an object.
The _ is often located over sunspot groups. Has areas of low density in the gas of the corona.
coronal hole
What is a chemical reaction?
reaction between 2 elements, a change of matter