Star/sun

The coolest star color is...

• red

• blue

• white

Astronomers typically measure distances to stars in units called

• kilometers.
• light-years.
• parallax.
• electromagnetic spectrum.

The brightness of a star as seen from Earth is its 

• apparent brightness.
• absolute brightness.
• parallax.
• reflective brightness.

Tags

NGSS.HS-PS4-3

A star that is closer to the Earth will look brighter than a star that is farther away.

• True

• False

All stars are the same size.

• True

• False

The Barnard's star is 6 light years away from Earth. What unit of measurement does the light year represent?

• Distance

• Mass

• Speed

• Time

Stars are made of mostly which two gases?

• Hydrogen and Helium

• Hydrogen and Oxygen

• Hydrogen and Nitrogen

• Hydrogen and Carbon

Billions of stars are held together in groups called __________.

• galaxies

• solar systems

• planets

• comets

Tags

NGSS.MS-ESS1-2

The luminosity of a star describes its ______________.

• brightness

• temperature

• age

• color

What color are the hottest stars?

• blue

• red

• white

• yellow