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

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