Helios
Galaxies Galore
Life Cycle of Stars
characteristics of stars
stars and constellations
100
The region of the sun's interior where nuclear fusion occurs.
What is the core.
100
A large group of stars, dust and gas.
What is a galaxy.
100
A hot ball of gas and dust is brought together by gravity. Nuclear Fusion has not yet started
What is a protostar.
100
About how many kilometers are in a light-year.
What is 9.5 trillion.
100
an imaginary pattern of stars.
What is a constellation.
200
How often sunspot cycles repeat.
What is 11 years.
200
Our galaxy.
What is the Milky Way.
200
A star undergoes the fusion of hydrogen and helium
What is a main sequence star.
200
A star's color reveals this .
What is a star's temperature.
200
this constellation contains the stars Betelgeuse and Rigel.
What is Orion.
300
Giant eruptions at the sun's surface that increase solar wind
What are solar flares.
300
The 25-30 galaxies closest to the Milky Way.
What is the Local Group.
300
A high-mass star stops fusing Hydrogen. The star expands as it fuses heavier elements.
What is a super giant.
300
Astonomomers use spectography to determine this
What is a star's chemical composition.
300
The brightest star. Also known as the "dog star"
What is Sirius.
400
Dark spots that are found on the photosphere of our sun.
What is the chomoshpere.
400
The type of galaxy that may contain trillions of stars.
What is elliptical.
400
Nuclear fusion stops at this element.
What is iron.
400
The diagram that is used to compare a star's temperature with its luminosity.
What is the HR Diagram.
400
The star Polaris is more well known as this
What is the North Star.
500
solar flares can greatly increase the amount of these solar particles
What is solar wind.
500
This theory of the existence of the universe stated that 13.7 billion years ago there was a giant ball of matter that exploded into rocks, dust and gas. Over years these particles expanded forming many galaxies. It is still expanding.
What is the big bang theory.
500
the explosion of a high-mass star
What is a supernova
500
A star's size and temperature determine this
What is luminosity
500
The only star that is not in a constellation.
What is the sun
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