Astronomy

LUMINOSITY means....

• age

• roundness

• brightness

• type

Tags

NGSS.HS-PS4-3

Which star has the LEAST luminosity?

• Spica

• Alpha Centauri

• Aldebaran

• Procyon B

How many km from the sun is Earth?

• 149.6 billion km

• 57.9 million km

• 149.5 million km

• 4,498.3 trillion km

Tags

NGSS.MS-ESS1-3

How long does it take light from the sun to reach Earth?

• approx. 24 hours

• approx. 8 minutes

• approx. 1 hour

• approx. 1 year

The shape of our galaxy is:

• oblate sphere

• circle

• elliptical

• spiral

The Sun is classified as a...

• supergiant

• giant

• main sequence star

• white dwarf

Stars in the lower right of the Hertzsprun-Russell diagram (Characteristics of stars) are:

• hot and bright

• cool and dim

• hot and dim

• cool and bright

a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity

• constellation

• Jupiter

• Earth

• galaxy

Tags

NGSS.MS-ESS1-2

a main sequence star is primarily composed of which gases?

• hydrogen and oxygen

• hydrogen and nitrogen

• oxygen and helium

• hydrogen and helium

order the following from OLDEST to YOUNGEST...

• solar system

• Milky Way galaxy

• universe