Galaxies Quiz

What is a galaxy?

• It is a massive collection of stars, gas, dust, and dark matter that is held together by gravity.

• It is a massive collection of stars.

• It is a massive collection of stars, and gas that is held together by gravity.

• It is a massive collection of dark matter that is held together by gravity.

Scientists think the universe has _________of galaxies.

• hundreds

• millions

• billions

• trillions

There are __________ major types of galaxies.

• five

• four

• six

• three

Spiral galaxies are

• made up of stars,Gas and dust.

• not made up of stars,Gas and dust

• made up of just gas and dust.

• made up of stars and dust.

Elliptical galaxies are

• made up of stars,Gas and dust.

• not made up of stars,Gas and dust

• made up of just gas and dust.

• made up of stars and dust.

All of the three types of galaxies are held together by gravity.

• This is not true.

• This is sometimes true.

• This is true.

• This is completely false.

All of the three types of galaxies are rich in gas and dust.

• This is not true.

• This is sometimes true.

• This is true.

• This is completely false.

In both Spiral and Irregular galaxies there are

• only old stars present.

• only young stars present.

• both young and old stars are present.

• not young and old stars are present.

The centers of both Elliptical and Spiral galaxies

• do not have huge bulge nor disk halo is present.

• have a huge bulge but no disk halo is present.

• have only a disk halo.

• do not have a huge bulge.

The shape of an elliptical galaxy is

• round to oval shape.

• not round to oval shape.

• not just a random shape.

• regular shape its just a random shape.