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Stars
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Stars, Stars, Stars*
The Sun
Galaxies and the Universe
100
Modern astronomy divides the night sky into _______ constellations
88
100
The Little Dipper is a part of the constellation _______________.
Ursa Minor
100
Hot stars are ______________________ (two colors)
blue and white
100
Areas of the Sun's surface that appear dark because they are cooler than surrounding areas are called ____________________.
sunspots
100
Violent eruptions on the Sun that shoot outward at high speeds are called _____________.
solar flares
200
The Big Dipper is a part of the constellation ___________
Ursa Major
200
A _________________ is the distance that light travels in one year.
light year
200
Relatively cool stars are _____________ (two colors)
red and orange
200
(Complete this statement ) There are more stars in the sky than all of the............
grains of sand in all the beaches in the world.
200
The Milky Way is a ___________ galaxy (what type)
spiral
300
Patterns of stars in the night sky are called __________________
constellations
300
What is the speed of light?
300,000 km/s
300
The _____________ ______________ of a star is a measure of the amount of light it gives off.
absolute magnitude
300
Huge, arching columns of gas are known as _____________________.
prominences
300
Earth and the solar system are in a galaxy called the ______________________.
Milky Way
400
_______________ is often called the North Star.
Polaris
400
The __________ _______________ of a star is a measure of the amount of light received on Earth.
apparent magnitude
400
The nearest star to Earth, other than the Sun, is __________ _______________.
Proxima Centauri
400
The Sun is unusual in one way. What way is that?
It is not close to any other stars.
400
Name the three types of galaxies.
spiral, elliptical, and irregular
500
Name three constellations.
The Big Dipper, The Little Dipper, Ursa Major, Ursa Minor, Cassiopeia...
500
The apparent shift in the position of an object when viewed from two different positions is known as ________________.
parallax
500
Stars that are the same temperature as the Sun are ________________
yellow
500
List the three layers of the Sun's atmosphere beginning with the surface layer.
photosphere, chromosphere, corona
500
The ____________________________ states that the universe probably began about 13.7 billion years ago with an enormous explosion.
Big Bang Theory