The universe so far.

 The actual brightness of an object such as a star

• Luminosity 
• Apparent Magnitude 
• Brightness 
• Light Year

The most commonly accepted theory that explains the beginning of our known universe is the -

• Theory of Evolution
• Big Bang Theory
• Cell Theory
• Blackhole theory

Tags

NGSS.HS-ESS1-2

Which of the following is the largest?

• star
• universe
• cluster
• galaxy

Light Years are a measure of - 

• time
• speed
• distance
• light

Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?

• 1 year
• 4.3 years
• 43 years
• 10 trillion years

Tags

NGSS.HS-PS4-3

What does the Big Bang theory suggest?

• The universe was just there
• The Milky Way is the only solar system
• The universe is continually expanding
• The universe started as a point, expanded, and will return to a point

Tags

NGSS.HS-ESS1-2

In the diagram given, what happens as we move to the left?

• Stars get larger
• Stars get colder
• Stars get hotter
• Stars get smaller

Which has longer wavelengths?

• Radio

• Visible

• Gamma

• X-ray

Which describes the location of star A correctly?

• Star A is less bright than the Sun and has a surface temperature above 25,000 K

• Star A is brighter than the Sun and has a surface temperature below 25,000 K

• Star A is less bright than the Sun and has a surface temperature of above 11,000 K

• Star A is brighter than the Sun and has a surface temperature below 11,000 K.

Which type of stars belong to spectral class K and have the lowest luminosity?

• Giants

• White Dwarfs

• Supergiants

• Main-Sequence stars