The Universe and Stars

Astronomers think that in the future the universe will continue to

• Shrink

• Expand

• Explode

• Collapse

Large objects that are made of gas or rocks are called

• asteroids

• comets

• stars

• planets

Tags

NGSS.MS-ESS1-3

What is the nearest star to planet Earth

• Moon

• Sun

• Sirius

• Proxima Centauri

Distance measurement used by astronomers for distant objects.

• Kilometers

• Light Years

• Miles

• Light Seconds

What is the life cycle of a medium sized star?

• Nebula, red giant, nova, white dwarf, black hole

• Red giant, nova, white dwarf, dead star

• Nebula, red giant, nova, white dwarf, dead star

• Nebula, white dwarf, dead star

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

What happens when a massive star's life ends?

• dead star

• black hole or neutron star

• supernova

• white dwarf

What color of star is the hottest?

• Blue

• Red

• Yellow

• Orange

Tags

NGSS.HS-ESS1-3

a massive ball of gas held together by gravity with a core so hot that nuclear fusion occurs

• star

• black hole

• white dwarf

• galaxy

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

A Hertzsprung-Russell diagram (H-R diagram) is used to…

• classify stars by temperature and brightness

• illustrate various wavelengths of light

• show the distances between stars

• differentiate between stars and planets

Sirius is a star about 8.6 light years away from Earth. Which of these statements is correct based on this information?

• It would take about 8.6 years for astronauts to travel to Sirius.

• Light from Sirius takes about 8.6 years to reach Earth.

• Light from Sirius takes about 8.6 light years to reach Earth.

• Light from Sirius takes about 8.6 billion years to reach Earth.