Ch 4 Stars, Galaxies, and the Universe

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Can you name the Ch 4 Stars, Galaxies, and the Universe Key Terms?

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DefinitionTerm
The brightness of a star depends upon both its size and ___________.
Do supergiants form from high mass stars or low mass stars?
Which stars live longer lives: high mass stars or low mass stars?
Type of galaxy that does not have a regular shape
Small asteroid-like and comet-like bodies that collided to form the planets
Do neutron stars form from high mass stars or low mass stars?
Type of star cluster that is tightly packed with over a million stars
If a star is blue, is it hot or cool?
When the dim star blocks light from the bright star in a binary star
True or false: The universe is about 13.7 billion years old.
Do red giants form from high mass stars or low mass stars?
Type of galaxy that is shaped like a stretched out ball
Huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity
The blue-white core of a star that is left behind and cools becomes a ________.
The diagonal area of stars on the Hertzsprung-Russell diagram
Brightess as seen from the same distance (actual brightness)
Do white dwarves form from high mass stars or low mass stars?
A contracting cloud of gas and dust with enough mass to form a star
Leftover thermal (heat) energy from the big bang
Type of star cluster that is loosely packed with only a few thousand stars
The galaxy that our solar system is located in
Scientific notation uses powers of this number to write very large or very small numbers
DefinitionTerm
Explosion that created our universe
Do supernovas form from high mass stars or low mass stars?
Very large groupings of stars
Large cloud of gas and dust that formed our solar system
Large cloud of gas and dust from which stars form
Type of galaxy with a bulge in the middle and arms that spiral outward
Star systems that have two stars
Matter that does not give off electromagnetic radiation
Astronomer who stated that the farther away a galaxy is, the faster it is moving away from us (last name only)
The apparent change in position of an object when you look at it from different places.
An object with gravity so strong that nothing, not even light, can escape
The explosion of a supergiant
True or false: Our sun is a medium-sized star.
The distance that light travels in one year
Unknown force that is causing the universe to expand
A protostar becomes a star when _________ begins.
Does a planetary nebula form from high mass stars or low mass stars?
If a star is red, is it hot or cool?
Group of two or more stars
How long a star lives depends on its _______.
Do black holes form from high mass stars or low mass stars?
Brightness as seen from Earth

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