Star

When two stars are orbiting one another it's called ___

• an unary system

• a binary system

• a trinary system

• a doublet system

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Astronomers think that most stars are born in groups, called ___

• assemblages

• bundles

• clusters

• blobs

Tags

NGSS.HS-ESS1-3

Loosely bound collections of dozens or thousands of stars, usually in an irregular shape, are called ___

• hexadecimal star systems

• open clusters

• globular clusters

• nebulae

What is the typical distance between stars in an open cluster?

• a fraction of a light year

• a few light years

• a few dozen light years

• a few hundred light years

By looking at the color of a star, astronomers can tell about the --

• distance of the star

• location of the star

• temperature of the star

• shape of the star

Tags

NGSS.HS-PS4-3

What determines the absolute brightness of a star?

• color and mass

• temperature and density

• temperature and mass

• size and temperature

Which of the following is an important property of stars, because it provides some information about the temperature of a star?

• The star's name

• The shape of the star

• The distance to the star

• The star's color

The Pleiades appear as a tightly-packed collection of stars, and a lot of people call them ___

• The Six Siblings

• The Seven Sisters

• The Eight Dancers

• The Nine Brothers

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Clusters of hundreds of thousands of stars that form a roughly spherical shape are called ___

• open clusters

• closed clusters

• globular clusters

• bulbous clusters

What kind of elements are found in the old stars found in globular clusters?

• mostly lighter elements

• mostly metals

• mostly carbon, nitrogen, and oxygen

• mostly heavier elements

Tags

NGSS.HS-ESS1-3