Stars
The Sun
Evolution of Stars
Galaxies and the Universe
It's Out There
100
constellations
What are patterns of stars in the night sky called?
100
nuclear fusion
How does the Sun produce energy?
100
The H-R diagram
What shows the relationship of a star's temperature to its absolute magnitude?
100
Local Group
What is a group of galaxies called?
100
Blue
What is the color of the hottest star?
200
Polaris
What is another name for the North Star?
200
Sun spots
What are the darker, cooler areas on the Sun's surface?
200
nebula
What is the birthplace of stars called?
200
steady state theory
What is the theory that states the universe has always been here?
200
Light year
What is the distance light travels in a year?
300
parallax
What is apparent shift in the position of an object when viewed from two different positions?
300
Coronal mass ejections
What are electrically charged gases that are ejected from a layers in the Sun's atmosphere?
300
giant
What does a main sequence star become after it uses up all the hydrogen in its core?
300
galaxy
What is a large group of stars, gas and dust that is held together by gravity called?
300
spiral galaxy
What is the shape of the Milky Way?
400
apparent magnitude
What is the amount of light a star gives off called?
400
photosphere
What is the layer of the Sun's atmosphere that is often called the surface of the Sun?
400
white dward
What does a star become when it has no fuel left and its outer layers escape into space?
400
red shift
What shows that galaxies outside the Local Group are moving away from Earth?
400
prominences
What are the arches of gases that erupt on the Sun?
500
spectra or spectrum
What do astronomers look at to determine the composition of a star?
500
coronas
What causes auroras? OR: What layer of the Sun's atmosphere is above the transition zone? OR: What is the largest layer of the Sun's atmosphere?
500
supernova
What does a star become when its core collapses violently and the outer portion of the star explodes?
500
Doppler shift
What is the shift in light and/or sound called?
500
black hole
What has such strong gravity that nothing can escape from it?
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