The North Star
This is the name of the North Star
Polaris
Sirius is a binary star system. Another name for a binary star system is _______.
Double star system
What are constellations?
The patterns the stars form.
Scientists can tell how hot a star is by its (color, shape).
color
What is a supernova?
A dying star
True or False:
Those who live in the Northern Hemisphere can always see the North Star.
True
Galaxies come in _____ basic shapes.
4 (spiral, elliptical, lenticular and irregular)
True or False:
Constellations can help with navigation and star identification.
True
Using colors:
____ stars are the hottest.
____ stars are medium temperature.
____stars are the coolest.
Blue=hottest
Yellow=medium
Red=coolest
What do you call the clouds and debris left by a supernova?
Nebula
The North Star is part of this constellation
the little dipper
The sun is this many million miles away.
33
93
1003
93
The Little Dipper is not a constellation, but it is an ______
Asterism
Does a smaller number indicate a brighter or duller star?
brighter
These stars sometimes burn very hot and sometimes cool off significantly.
Variable stars
True or False:
The North Star is the brightest star in the night sky.
False
Light takes this many minutes to get from the sun to your eye.
8
What is an asterism?
A set of stars that form an easily recognizable shape.
Our sun is medium temperature, medium brightness and medium size. Is it a G-5 V star or a O - 1 I star?
G5V
These are formed by the collapse of a dying star and have a powerful gravitational pull because of their huge mass.
Black holes
True or False:
All the stars appear to rotate around the North Star.
True
Light travels at _______ miles per second.
186,000
100,000
860,000
186,000
The Big Dipper is part of the constellation ______, while the Little Dipper is part of the constellation ______.
Big Dipper = Ursa Major
Little Dipper = Ursa Minor
The star categories tell 3 basic things. What are those 3 things?
1. Hot or Cold (letters)
2. Bright or Dim (numbers)
3. Big or Small (Roman numerals)
This is is the distance light can travel in a year.
a light year