Critical+Vocabulary

= Critical Vocabulary =

====- Hertzsprung-Russel Diagram: a graph made to determine if the brightness and the tempreature of stars are connected ==== ====- Apparent Magnitude: The size of a star according to a human's observation from earth ==== ====-Absolute Magnitude: The size of a star when a person is a few light years away from earth ==== ====- Luminosity: The brightness of a star as it appears to you ==== ====- Nebula: a cloud of dust and gas before the star is created ==== ====- Main Sequence: stars live most of their lives here in this stage; the star contracts, the tempreature of the core and brightness goes up, 90% stars are here, ==== ==== - Giant: a star that is 10-100 times our sun, not quite a medium or a super giant star ==== ====- Super Giant: the biggest stars in our world ==== ====- Supernova: a lot of energy is quickly coming together and then the star explodes ==== ====- Dwarfs: a tiny star that does not send off a lot of light, almost not a true star, ==== ====- Galaxy: a big system of stars that clings together due to gravity ==== ====- Fusion: hydrogen comes together to form helium and energy is let out ==== ====- Black Hole: when a star explodes, this is created; no light can get out of the black hole because of its strong gravitational field. ==== ====- Neutron Star: the left over core of a star the exploded due to a supernova, made of neutrons, ==== ====- Protostar: is the part before a star becomes a star, the starting of a star ==== ====- Scientific Theory: A well tested concept that explains a wide range of observations ==== ====<span style="background-color: transparent; color: #d800ff; font-family: 'comic sans ms'; font-size: 19px; text-decoration: none; vertical-align: baseline;">- Big Bang Theory: How scientists believe the universe was made. It was created by an explosion that resulted in the expansion of the universe, and is still expanding today. ==== ====<span style="background-color: transparent; color: #d800ff; font-family: 'comic sans ms'; font-size: 19px; text-decoration: none; vertical-align: baseline;">- Light Years: the distance traveled by light in one year ==== ====<span style="background-color: transparent; color: #d800ff; font-family: 'comic sans ms'; font-size: 19px; text-decoration: none; vertical-align: baseline;">-Light Second: the distance light travels in one second ====