Life & Death of a Star
After a medium-sized star becomes a giant and cools, it shrinks into this small, hot object.
White Dwarf
When a massive star (supergiant) explodes, it is called this.
Supernova
These pinwheel-shaped galaxies have arms that spiral out from a center.
Spiral Galaxies
The distance light travels in one year, roughly 9.5 trillion km.
Light-year
If you see a star that is red, what does that tell you about its temperature?
It is cool
This is the "dead" stage of a medium star, occurring after it stops glowing entirely.
Black Dwarf
This object is so dense that not even light can escape its gravity.
Black Hole
This is the specific galaxy where Earth is located.
The Milky Way
Put these in order from smallest to largest: Milky Way, Universe, Solar System
Solar System, Milky Way, Universe
Our Sun is a medium-temperature star. What color would it likely be?
Yellow
True or False: Small stars shine longer than larger, massive stars.
True
Aside from a black hole, this is the other possible remnant of a supernova.
Neutron Star
These are the most common shaped galaxies in the universe.
Elliptical Galaxies
Stars begin as huge clouds of these two things.
Gas and Dust
What color are the hottest stars?
Blue or Blue-White
List the three stages of a medium-sized star’s end-of-life in the correct order.
Giant, White Dwarf, Black Dwarf
Explain the relationship: How does a supergiant become a black hole?
A supergiant explodes as a supernova, and the remains collapse into a black hole.
These galaxies are smaller, less common, and have no specific shape.
Irregular Galaxies
This is the force that pulls gas and dust together to eventually start fusion.
Gravity
What is the process that happens when a cloud of gas/dust heats up enough to "turn on" a star?
Fusion