Download Quiz #4 – The Electromagnetic Spectrum and Stars

Chapter 28 – Stars and Galaxies – Study Guide
Name _______________________
Earth Science
1.
The elements of the sun can be identified using a _____________________.
2.
Most stars are composed mainly of _____________ and _________________.
3.
If a star’s spectral lines are shifted towards the red end of the spectrum, then the star is
moving _____________ the Earth.
4.
Objects moving closer to the Earth, shift the spectrum to the ______________ end.
5.
The part of the electromagnetic spectrum that can be separated into colors of the rainbow is
____________.
6.
The unit most used by astronomers to express the distance to other galaxies is a _____________.
7.
All electromagnetic radiation travels and a speed of ________________ km/sec.
8.
Put the types of E.M.R. in order from longest wavelength to shortest wavelength
Long wavelength
short wavelength
9.
Which type of electromagnetic radiation has the shortest wavelength? ________________
10.
Which type has the lowest frequency? _____________________
11.
The color of the hottest stars is _________.
12.
Any hot, bright sphere of gas like the sun is called a _________.
13.
The brightness of a star as we view it from Earth is the star’s ________________ magnitude.
14.
Galaxies are classified by their __________________.
15.
Name the three types of galaxies ______________
16.
What is the most accepted theory for the origin of the universe? ______________________
17.
Who came up with evidence for the Big Bang Theory? ____________________
18.
What type of galaxy is the Milky Way galaxy? _____________________
19.
A _____________ is a group of 100’s of billions of stars.
20.
The late phase(stage) for a small mass star is a ________________________.
______________
________________
21.
_____________________ is the “fuel” of the sun.
22.
By using a ____________________ astronomers can identify the elements in a star.
23.
On an H-R Diagram, stars are classified by On an H-R Diagram, stars are classified by
___________________and ___________________.
24.
What is the next stage of the sun? _______________________
25.
Two stars that are in close orbit around each other are called ___________ binary stars.
26.
_____________________ stars are very faint, Earth-sized stars.
27.
A _________________ is a star in which matter is continually condensed and no light escapes.
28.
The ______________ magnitude is a measurement that allows scientists to compare the true brightness
of stars.
29.
A star that changes brightness over regular periods of time is called a _________________ star,
30.
A______________________ is a type of variable star that can be used to measure distances in space.
31.
A stellar nebula is composed of ___________ and ____________.
32.
The ___________________ will determine the evolutionary course a star will take.
33.
The sun is a __________________________ star.
34.
The explosion of a massive star at the end of its life is called a _____________________.
35.
The process that occurs when atoms combine to form a new element and release energy is called
_________________.
36.
The first stage in the life cycle of a star is called a ___________________.
37.
Rapidly spinning neutron stars are called _________________.
38.
____________ is the main component of most stars.
39.
The sun will continue to fuse hydrogen into helium for another _____________ years.
40.
Which star will appear brighter in the night sky, a star with an apparent magnitude of 0 or a star with an
apparent magnitude of +1? ________________
41.
At the present time most astronomers agree that the universe is _________________.
42.
The further away a galaxy is from us the (faster/slower) it is moving.
Use the diagram to answer the following questions
43.
Name the two brightest stars.
________________________________
44.
Which star is hotter, Vega or Capella?
_____________________
45.
Which group of stars is the dimmest?
_____________________
46.
What group of stars does Arcturus belong to?
_____________________
47.
At which position in the diagram would we find our solar system? ____________________
48.
What type of galaxy is shown below? _________________________