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

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