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

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