What is the distance between the crest of one wave and the crest of the next wave?
100
Observatory
What is a building that contains one or more telescopes called?
200
Refracting Telescope
What kind of telescope did Galileo use?
200
Different types of electromagnetic radiation, including visible light.
What do most telescopes collect and focus?
200
A piece of transparent glass curved so that the middle is thicker then the edges.
What is a convex lense?
200
Collect information about stars, including their chemical compositions and temperatures.
What does a spectrograph do?
300
By comparing a star's spectrum with the known spectrums of different elements, astronomers can infer which elements are found in a star.
How can astronomers infer which elements are found in a star?
300
Galaxy
What is a cluster of stars, gases, and sut held together by gravity called?
300
All of space and everything in it.
What is the Universe?
300
The distance that light travels in one year.
What is a light year?
300
The apparent change in position of an object when seen from different places.
What is a parallax?
400
Size, Temperature and Brightness
What are the 3 main characteristics used to classify stars?
400
A. A star's color
B. Neutron Star and White Dwarf Star
A. What reveals a star's temperature?
B. Which kind of stars are smaller then the sun?
400
Because Rigel is very hot - each square meter of its photosphere gives off a lot of light.
Why does Rigel shine as brightly as Betelgeuse, even though Rigel is much smaller then Betelgeuse?
400
A. Apparent magnitude and
B. Absolute magnitude
How bright a star looks from Earth depends on what 2 factors?
400
A. The star's apparent magnitude and
B. The star's distance from earth
What are 2 things must an astronomer find out in order to calculate a star's absolute magnitude?
500
A. Hertzsprung-Russel Diagram
B. Pulsar
A. The diagram that shows the relationship between the surface temperature and the brightness of stars is called what?
B. A neutron star that appears to give off pulses of radio waves is called?
500
A. Nebula
B. Protostar
C. Its Mass
A. A large amount of gas and dust spread out in an immense volume is called what
B. The earliest stage of a star's life is called a what?
C. What factor determines how long a star lives?
500
A. Quasar
B. Binary Stars
C. Eclipsing Binary
A. distant galaxy with a black hole at its center is called a what?
B. Star systems with 2 stars are called double stars or what?
C. A star system in which one star blocks the light from another star is called?
500
A. Milky Way
B. Billions
A. The galaxy in which our solar system is located is called?
B. How many galaxies are ther in the universe?
500
A. Supernova
B. Neutron Star
C. Black Hole
A. The explosion of a dying giant or supergiant star is called?
B. A tiny star that remains after a supernova explosion is called a?
C. The remains of an extremely massive star pulled into a small volume by the force of gravity is called?