Stars and Galaxies - Science Test

A "light year" - is a measurement of...

• distance

• time

• luminosity

• absolute brightness

• relative brightness

Scientists classify stars based on...

• temperature

• location

• size

• temperature and size

• size and location

Earth is located in THIS galaxy...

• Milky Way

• Andromeda

• Betelgeuse

• Snickers

• Antares

Tags

NGSS.MS-ESS1-2

The Milky Way is THIS type of galaxy...

• Elliptical

• Spiral

• Irregular

• Unknown

Galaxies that appear to have a bulge in the center and arms that move outward are called

• Elliptical

  Galaxies

• Spiral Galaxies

• Irregular Galaxies

• Unknown Galaxies

Our SOLAR SYSTEM (our Sun and planets) formed about this many years ago

• 5 million

• 5 billion

• 14 billion

• 15 million

Tags

NGSS.HS-ESS1-6

This is what we call the force that is causing the expansion of the universe to accelerate

• Dark energy

• Dark matter

• Big Bang

• Parallax

• Gravity

Parallax is used to determine a star's

• distance from Earth

• composition

• temperature

• brightness

• color

Which of the following is a major difference between elliptical galaxies and spiral galaxies?

• Elliptical galaxies have almost no gas or dust between stars

• Elliptical galaxies vary more in shape than spiral galaxies

• Spiral galaxies have almost no gas or dust between stars

• Spiral galaxies contain only old stars

A star is born when...

• A nebula expands

• A protostar begins to cool

• Helium and oxygen combine

• Nuclear fusion begins