Vocab.
Vocab.
Differences
Reading Check
Picture Check
100
What is spectrum in your own words?
Colors that are produced when a white light passes through a prism.
100
What is continuous spectrum?
A special spectrum that consists of all the colors.
100
Red is considered cool and blue is warm.
What is the difference between blue and red from this section?
100
Why is the actual motion of stars hard to see?
Because stars are so distant.
100
What is hotter, Betelgeuse or Rigel? Why?
Rigel, because it's blue and that is a warm color.
200
What is apparent magnitude in your own words?
How bright a star looks from Earth.
200
What is emission lines?
Lines that are made when certain wavelengths of light, or colors, are given off by hot gases.
200
What's different about how stars were classified in the 1800s and now?
In the 1800s they classified the stars according to the elements in it and how bright they were. Today they're classified from the temperature they contain.
200
What does the pattern of lines in a star's absorption spectrum show?
The pattern of lines in a star's absorption spectrum shows some of the elements that are in the star's atmosphere.
200
What makes neon, hydrogen, helium, and sodium so unique?
Their emission lines contains a unique set of colors.
300
What is absolute magnitude?
Brightness of a star from the distance of 32.6 light-years from Earth.
300
What is absorption spectrum?
It is the process when a light from a hot solid or dense gas passes through a less dense, cooler gas.
300
What causes the different constellations at different times of the year?
The Earth's tilt and rotation.
300
What is another word for the outer layer of a star?
Star's atmosphere.
300
What is the magnitude of the brightest star in the Big Dipper in figure four?
1.8
400
What is light-year?
It is the go far light may travel in one year.
400
What is first-magnitude?
The brightest star seen from human eye.
400
What process makes neon signs glow?
It glows when an electric current flows through the gas.
400
Stars rotate around what star?
The stars appear to rotate around Polaris.
500
What is parallax?
It's an apparent shift in the object's position when seen from different locations.
500
What is sixth-magnitude?
The dimmest star seen from human eye.
500
What is process makes the outer layer more helpful to astronomers?
Elements in a star's atmosphere, or outer layer, absorb some of the light that radiates from the star. Because different elements absorb different wavelengths of light, astronomers can tell what elements are in the star depending on the amount of light observed from the star.
500
What do astronomers study to find about stars?
Astronomers study starlight to study stars.
500
What two things do astronomers use to find the actual distance to stars that are close to Earth?
Parallax and simple trigonometry.
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