Life Cycle
Universe
Stars
Vocab
More vocab
100
Stars originate in clouds of dust and gas called....
What is nebulae
100
How many stars are in our solar system
What is one (the sun)
100
The 2 main gases of which stars are made
What is hydrogen, helium
100
Large celestial body, composed of gas that emits light and energy
What is a star
100
A large collection of stars, gas and dust; held together by gravity
What is galaxy
200
What determines whether a star ends its life as a black hole or a white dwarf
What is its size
200
Name at least 2 of the shapes of galaxies
What is spiral (Milky Way), elliptical, irregular
200
The process which 'powers' stars to emit light and energy
What is nuclear fusion
200
Large spherical body that orbits a star
What is a planet
200
Measure of the brightness of a star as observed from earth
What is apparent magnitude
300
High mass stars can end their lives as one of these 2 things depending on their mass
What is neutron star or blackhole
300
what does a light year measure
What is the DISTANCE light travels in one year
300
What is the color of the hottest stars? What is the color of the coolest stars?
What is blue........red.
300
A star and all of the planets and other bodies that orbit around it
What is a solar system
300
What is the standard unit of measurement for the size of stars
What is solar radii
400
Stars end the main sequence stage and become giants when this process stops
What is nuclear fusion
400
Name at least 4 other bodies in our solar system besides the planets
What is moon, comets, meteoroids, asteroids, dwarf planets
400
What are 3 properties used to classify stars
What is brightness, temperature/color, size
400
What diagram plots stars according to their brightness and temperature
What is an H-R diagram
400
This is responsible for holding the stars, gas and dust in galaxies together
What is the force of gravity
500
In the final stage of its life, the sun will become this. Where will it be on the H-R diagram
What is a white dwarf (or black dwarf)... The bottom left (hot but not so bright anymore)
500
Give at least 2 differences between the first 4 planets and the last 4 planets in our solar system
What is 1st four: close to sun; small; terrestrial (rocky, dense) last four: further away; very large; gas giants (small rocky core)
500
Where on the H-R diagram would you find the brightest, coolest stars (like red giants)
What is the top right
500
The stage in which stars spend the majority of their lives
What is the main sequence
500
All existing energy, matter and space
What is the universe
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