Features of the Sun
How Stars are Classified
What are Galaxies
Vocabulary
Miscellaneous
100
Most of the sun's mass is in the ______.
What is the core.
100
Two factors that tell the brightness of a star is magnitude and ____.
What is distance?
100
The distance light travels in one Earth year.
What is light-year.
100
The sun's atmosphere is the ___________.
What is the corona?
100
Bursts of energy from photosphere.
What is a solar flare?
200
The core is heated energy from the ______.
What is the radiation zone.
200
In the diagram, the band that runs from the top right to the bottom left, it is called _________.
What is main sequence.
200
The Earth is in the ______ galaxy.
What is the Milky Way?
200
A very old star is a __________.
What is the red giant?
200
Galaxies in a group are called a__________.
What is a galactic cluster?
300
The sun is a huge ball of ______ and ______.
What is hydrogen and helium
300
Absolute and apparent _________ is how bright a star seems or how it really is.
What is magnitude.
300
This is bigger than a universe.
What is nothing?
300
Dark area on the surface of the sun.
What are sunspots?
300
There are _____________ galaxies in the world.
What are 100 billion?
400
When a fast-moving stream of particles is thrown into space they are called _____-.
What is solar wind.
400
How bright a star actually is.
What is absolute magnitude?
400
Galaxies are classified by their ________.
What is shape?
400
These are groups of stars, dust, and gas.
What are galaxies?
400
The Milky Way is one of the ____________ galaxies in the world and it includes ________________ stars.
What is largest and 100 billion?
500
The names of the 4 layers from the inside to the outside are ______.
What is core, radiation zone, convection zone, photosphere.
500
Scientists classified stars by there size, color, absolute magnitude, and _______.
What are surface temperatures?
500
The 4 different types of galaxies are ________.
What is spiral, elliptical, barred(spiral), irregular?
500
The atmosphere is______.
What is everything that exists, stars, dust, gas, and energy?
500
A ______ galaxy has arms that contain young stars, protostars, dust, and gas.
What is spiral?
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