5/17: Astronomy pt 3

To a nighttime observer on Earth, how many degrees do the stars appear to move around Polaris in 3 hours? (Earth rotates 15°/hr)

• 60°

• 45°

• 3°

• 15°

Tags

NGSS.HS-ESS1-4

A camera was placed in an open field and pointed toward the northern sky. The lens of the camera was left open for a certain amount of time. The result is shown in the photograph below. The angle of the arc through which two of the stars appeared to move during this time exposure is shown. How many hours was the lens left open to produce the photograph?

• 12

• 2

• 6

• 4

What factor below usually determines whether a star will be on the main sequence? (early/young stage)

• age

• mass

• size

• distance from our sun

Answer explanation

The AGE of a star will determine if it is on the main sequence since it is the EARLY STAGE. The pathway of a star into its intermediate or late stages is determine by MASS.

Which star has a surface temperature most similar to the surface temperature of Alpha Centauri?

• Polaris

• Betelgeuse

• Procyon B

• Sirius

Which table correctly classifies this star at points 3 and 4?

• 
• 
• 
• 

Tags

NGSS.HS-ESS1-3

Which is a possible surface temperature of this star at point 2?

• 3000 K

• 5000 K

• 7000 K

• 10,000 K

Which sequence of stars is listed in order of increasing luminosity?

(Luminosity should go from lowest to highest)

• Spica, Rigel, Deneb, Pollux

• Polaris, Deneb, 40 Eridani B, Proxima Centauri

• Deneb, Alpha Centauri, Rigel, Spica

• Barnard's star, Sun, Polaris, Spica

Tags

NGSS.HS-ESS1-3

The star Algol is estimated to have approximately the same luminosity as the star Aldebaran and approximately the same temperature as the Rigel. Algol is best classified as a....

(Agol is not on the reference table, but it can be classified based on the similarities it shares with Aldebaran and Rigel. Select the stage Agol would be closest to )

• main sequence star

• red giant star

• white dwarf star

• red dwarf star

Tags

NGSS.HS-ESS1-3

The reaction below represents an energy-producing process.

• in the Sun by fusion

• when water condenses in Earth's atmosphere

• from the movement of crustal plates

• during nuclear decay

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Base your answer to the following question on the diagram

, which shows two possible sequences in the life cycle of stars, beginning with their formation from nebular gas clouds in space. According to the diagram, the life-cycle path followed by a star is determined by the star's initial...

• mass and size

• temperature and origin

• luminosity and color

• luminosity and structure

Tags

NGSS.HS-ESS1-3