Page 153-154 Flashcards
A number of stars that appear to form a pattern are a ____
Constellation
A large hot bowl of gas which is held together by gravity and gives off its own light is a __
Star
The constellation Lorion can be seen in___From the northern hemisphere
Winter
The brightest star in the winter sky is___Which is in the constellation Canus major
Sirius
The word magnitude is used to describe the brightness of a ____
Star
The actual brightness of a star is its_____Magnitude
Absolute
The apparent shift of an object location when viewed from two positions is called_____
Parallax
Astronomers use a unit called the_____To describe distance in space
Light year
A stars color is related to its surface____
Temperature
The coolest stars are ___And orange
Red
The hottest stars are___In color
Blue white
In HR diagram compares the temperatures and______Of stars
Absolute magnitude
In the main sequence the hotter a star is the_____It is
Brighter
A star begins life as a____Which is an enormous cloud of gas and dust in space
Nebula
A young star that glows as gravity makes it collapse is a ____
Prostar
A star that is fusing hydrogen into helium is A ____ star
Main sequence
As a star uses up the supply of hydrogen at its core it expands and becomes a giant or____star
Supergiant
In object is gravity is so strong that even light cannot escape from it is a _____
Black hole
And extremely powerful explosion in the universe is called a _____
Supernova
When a star explodes in a supernova it’s quarter will become either a____or a black hole
Neutron star
Since black holes don’t give off____they cannot be seen directly
Light
The outermost part of the sun the____Can be seen from Earth only during a total solar eclipse is
Corona
The part of the sun that is visible is the______
Photosphere
