FSSA Space Science Review

The star Aldebaran is an orange giant star in the about 65 light years away from Earth. What would happen if Aldebaran were to explode right now?

• We would see the explosion before we hear it.

• We would see the explosion right away.

• We would see the explosion in 65 years.

• We would never be able to see the explosion.

How many galaxies there are in the universe?

• billions

• million

• thousands

• hundreds of millions

Tags

NGSS.MS-ESS1-2

Which correctly orders the relationship from smallest to greatest in size?

• galaxy, planet, solar system, universe

• planet, galaxy, universe, solar system

• universe, galaxy, solar system, planet

• planet, solar system, galaxy, universe

Which star has the highest surface temperature?

• Red

• Blue

An astronomer uses a telescope to observe an orange star. She infers that the star and the sun have similar sizes and surface temperatures. Using this information, what can the astronomer conclude about the star?

• The star is a white dwarf.

• The star is cooler than a blue star.

• The star is brighter than a red giant star.

• The star is more distant than most other stars in our galaxy.

Measure of a star's brightness as seen from Earth.

• Apparent magnitude

• Absolute magnitude

• Absolute brightness

Measure of a stars actual brightness.

• Apparent magnitude

• Absolute magnitude

• Absolute brightness

Why does a star, such as Betelgeuse, have a much greater absolute magnitude than apparent magnitude?

• Absolute magnitude is relative to the sun.

• Absolute magnitude does not take into account the distance from Earth.

• Apparent magnitude does not take into account the distance from Earth.

• Betelgeuse is closer to Earth.

Which is true about the sun?

• The sun is the largest star in the Milky Way galaxy.

• The sun is the closest star to Earth in all galaxies.

• The sun has the highest surface temperature of all stars in the Milky Way galaxy.

• The sun has the highest absolute brightness of all stars in the Milky Way galaxy.

Dark areas that form on the surface of the sun

• Solar flares

• Sunspots

• Prominences