Telescopes
Characteristics of Stars
Lives of Stars
Scale of the Universe
Vocabulary from Chapter #4
100
A building that houses telescopes
What is an observatory.
100
This color star is the hottest.
What is blue.
100
The blue-white core of the star that is left behind cools and becomes this.
What is a white dwarf.
100
The distance that light travels in one year.
What is a light year.
100
The apparent change in position of an object when seen from different places.
What is parallax.
200
An instrument that collects and focuses electromagnetic radiation.
What is a telescope.
200
The absolute brightness of a star depends on these two characteristics.
What are size and temperature.
200
How long a star lives depends on this.
What is its mass.
200
A system that uses powers of ten to write very large or very small numbers in shorter form.
What is scientific notation.
200
A graph relating the surface temperatures and absolute brightness of stars.
What is Hertzsprung- Russell Diagram.
300
Electromagnetic radiation visible to the human eye.
What is visible light.
300
The H-R Diagram is named after which two scientists.
What is Hertzsprung and Russell
300
A large cloud of gas and dust spread out in an immense volume and is the start of a stars life.
What is a nebula.
300
All of space and everything in it.
What is the universe.
300
A diagonal area on an Hertzsprung - Russell Diagram that includes more than 90 percent of all star.
What are main sequence stars.
400
A telescope that uses a convex lense to gather and focus light.
What is a refracting telescope.
400
Look on page 140. Sirius B is this type of star.
What is a white dwarf.
400
This determines whether a star becomes a white dwarf, neutron star, or black hole.
What is its mass.
400
The Andromeda galaxy is 2,200,000 light years away. Write that measurment using scientific notation.
What is 2.2 x 10 to the 6th power.
400
This is a rapidly spinning neutron star that produces radio waves.
What is a pulsar.
500
A piece of glass that is curved so the middle is thicker than the edges.
What is a convex lense.
500
These 5 characteristics are used to classify stars.
What are color, temperature, size, composition, and brightness.
500
When a star runs out of fuel it can become this.
What is a white dwarf, neutron star or black hole.
500
Astronomers often use this to measure distances to nearby stars.
What is parallax.
500
Matter that does not give off electromagnetic energy.
What is dark matter.
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