Stars and Brightness

measures how bright a star would be in relation to the sun if all stars were the same distance from the observer

• Brightness

• Luminosity

• Apparent Magnitude

• Photic Strength

Parsec

• the brightness of a star as seen from Earth have at a distance of 32.6 light-years from Earth Luminosity The actual brightness of a star
• A unit of distance that is equal to 3.26 light years
• the brightness that a star would have at a distance of 32.6 light-years from Earth
• The actual brightness of a star

Apparent Magnitude

• the brightness of a star as seen from Earth have at a distance of 32.6 light-years from Earth Luminosity The actual brightness of a star

• the brightness that a star would have at a distance of 32.6 light-years from Earth

• the location on the H-R diagram where most stars lie

• the brightness of a star as seen from Earth

What does the luminosity of a star indicate about its brightness?

• If it's a negative number, it's a bright star

• If it's a positive number, it's a dim star

• Its how many times brighter the star is compared to our sun

What are main sequence stars running out of when they start to die?

• Hydrogen atoms (or protons) to fuse together

• Hydrogen atoms (or electrons) to fuse together

Tags

NGSS.HS-ESS1-1

What is the name of the largest stars?

• Protostars
• Supergiants
• Red Giants
• Dwarf Stars

What is the name of the explosion at the death of a massive star?

• Supergiant
• Supernova
• Black Hole
• Nebula

How many stars are in our Solar System?

• 1

• 1 million

• 1 billion

• 1 trillion

The closest star to our Solar System is...

• Proxima Centauri

• rho Cassiopeiae

• Andromeda

• The North Star

Stars that are further away...

• Will be more blueshifted

• Will display less parallax

• Will always appear dimmer

• Will have a greater magnitude