Star Spectra Vocabulary & H-R Diagram Check Point

A​(n) ​ ​ (a)   contains dark lines superimposed on a bright continuous spectrum. ​

• Absorption spectrum
• emission spectrum
• spectrum

A pair of stars that orbit one another are called​ (a)  

• Binary stars
• cephelid variable
• Giant Star
• nebula

Match the following terms to its correct description.

• Blueshift

• a spectrum of colored lines on a dark background. Also called a bright line spectrum.

• emission spectrum

• the phenomenon in which light from a source that is moving toward an observer is shifted toward the blue end of the spectrum.

• spectrum

• a cloud of gas and dust in interstellar space.

• nebula

• the phenomenon in which light moving rapidly away from an observer appears shifted toward the red end of the spectrum

• Redshift

• the band of colors produced when light is passed through a prism or similar device.

Tags

NGSS.HS-ESS1-2

Match the following

• Star

• A star that expands and contracts in a regularly repeating cycle

• Cepheid variable

• A bright, very large star with a low density and a relatively low surface temperature.

• Giant Star

• a massive ball of plasma that radiates light.

The high temperatures inside stars are produced by ​ (a)   reactions inside the core of the star. These reactions convert hydrogen to ​ (b)   .

• nuclear fusion
• helium
• nuclear fission
• iron
• carbon

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

A Cepheid variable star that appears very bright, but has a ​ (a)   period, is relatively ​ (b)   to our solar system

• short
• close
• long
• far away

In astronomy, emission spectra are usually associated with ___________

Tags

NGSS.HS-ESS1-2

What are the characteristics of white dwarfs?

• small

• medium temperature

• very dim

• large

• hot & bright

The nearest star to our sun is ​ (a)   . The star group it belongs to is the ​ (b)   .

• Proxima Centauri
• Main Sequence
• Super Giants
• Betlegeuse
• Polaris
• Giants
• White Dwarf
• Barnard

How will the Sun’s luminosity and temperature change as it ages? Categorize the life cycle of the sun. ​ ​ ​ ​ ​

Groups:

(a) Sun's Correct Aging Process

,

(b) Sun's Incorrect Aging Process

• Sun will first age into a White Dwarf

• The sun will not die and remain the same throughout its life cycle.

• luminousity will increase

• surface temperture will increase

• As the sun dies it will become smaller and hotter and age into White Dwarf

• Sun will first age into a Giant Star

• luminousity will decrease

• surface temperture will decrease

Tags

NGSS.HS-ESS1-1