Galaxies and Stars

Galaxies

100

The milky way is this type of galaxy

Spiral

100

There are ____ types of galaxies.

3

100

Our solar system is in the center of the Milky Way Galaxy.  True or False

False

100

Galaxies with no arms but are round

Elliptical

100

This type of galaxy has no clearly defined shape.

Irregular

Stars

100

Color of stars with the coolest surface temperatures

Red

100

Main sequence stars fuse ________ to make ________.

hydrogen; helium

100

The collapsed core of a massive supergiant star not massive enough to become a black hole

neutron star

100

The H-R diagram plots stars'_______and_______on a diagram.

temperature and luminosity

100

Elements heavier than _______ can form during supernova explosions

Iron

Wild Card

100

A giant cloud of dust and gas in space is called a____________

nebula

100

The light with the longest wavelength on the electromagnetic spectrum

Radio waves

100

___________are stars that are hot when formed but are quite small and therefore not very luminous

White dwarf

100

A Barred Spiral Galaxy has only two arms.

True or False

True

100

A highly magnetized rotating neutron star that emits beams of electromagnetic radiation out of its magnetic poles.

pulsar