Characteristics and birth of a star
A star is a very hot glowing ball of what type of gas?
Hydrogyn!
What is the main fuel that the stars convert into helium?
Hydrogen!!
What is a black hole
Huge concentrations of matter packed into very tiny spaces
So far, there are how many constellations recognized by the International Astronomical Union
88!!
What Galaxie are we living in?
The Milky Way!!
Mass determines how quickly a star...
Burns through its fuel
What two types of stars are mentioned based on their mass?
Sun-like and massive!
A black hole is so dense that gravity under its surface, the event horizon, is strong enough that not even what can escape it?
Light!!
What is the name given to groupings of stars that are not officially recognized?
Asterisms!
What are Galaxies made up of?
Galaxies are made up of million or billions of stars. gas, and dust.
Star characteristics vary greatly in their?
colours, temperature, and mass
What happens to a star when the hydrogen in its core is used up?
The star shrinks and the helium core heats up starting to fuse into carbon!
The event horizon isn’t a surface like the earth’s or the suns, its a...
Border that contains all the matter that makes up the black hole!
What culture is mentioned as using constellations?
Greek!!
What type of galaxy is the Milky Way?
A spiral galaxy!!
As gravity draws material into the stars, the mass and temperature increases, and the core will start to?
Glow!!
Describe the process that leads to a star becoming a red giant or a red super giant.
as hydrogen gets used up, the stars shrink, and heats the helium core, causing it to expand into a red giant, or supergiant!!
What happens when two black holes merge?
They create ripples in space time!
In Greek Mythology, which hero was associated with the constellation Leo?
Hercules!!
How many stars are belived to be in our galaxy?
100-200 billion stars!!
stars have life cycles and they begin in a cold, dense nebula. what is a nebula?
cloud of gas and dust
What will happen to our sun in about 5 billion years, and what is the potential consequence?
Our Sun will become a red giant, and its diameter may extend out past the present orbit of Mars
When was the first Black Hole discovered?
1964!!
What does the word "Zodiac" mean?
Circle of animals/Circle of life!!
What are the two main types of galaxies mentioned?
Elliptical and irregular!!