Science Form 2 Chapter 11: Stars and Galaxies

Ancient Greeks, Romans, and other early cultures observed patterns of stars in the night sky called __________________.

• constellations

• galaxies

• light-years

• connections

Stars are classified by color, temperature, size, composition, and __________________.

• brightness

• shape

• distance

• appearance

A ________________ is the distance light travels in one year.

• light-year

• magnitude

• meteor

• mile

A star is ___________ when the contracting gas and dust from a nebula become so dense that nuclear fusion starts.

• born

• erupted

• beginning

• changing

After a star runs out of ___________ it becomes a white dwarf, a neutron star, or a black hole.

• fuel

• light

• miles

• space

Most stars a members of groups of two (binary) or more stars called star ______________.

• systems

• clusters

• groups

• constellations

A galaxy is a huge groups of single stars, star systems, star clusters, dust, and gas bound together by gravity.

• true

• false

Tags

NGSS.MS-ESS1-2

There are ____ types of galaxies.

• 4

• 6

• 8

• 3

The Milky Way is a ______________ galaxy.

• spiral

• irregular

• quasar

• elliptical

An enormous explosion that occurs when a massive star dies

• black hole

• nuclear fusion

• supernova

• solar wind