Binary and Multiple Stars

Astronomers use luminosity and surface temperature to classify stars.

• True

• False

Binary Stars are two identical stars in orbit about each other.

• True

• False

Most stars in the Universe are solitary stars like our Sun.

• True

• False

Spectroscopic binaries can be distinguished from each by using a telescope.

• True

• False

Blue giant stars live for only a few million years.

• True

• False

Tags

NGSS.HS-ESS1-3

Red dwarf stars live for almost a trillion years.

• True

• False

Typical lifespan for a _____ star is about 10 billion years.

• Red

• Yellow

• Blue

• Orange

Binary stars orbit around _________?

• the bigger star

• the system center of mass

• different focus points

• a black hole

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Astronomers can identify binary stars by ________?

• cyclical changes in brightness

• apparent magnitude

• mass

• color index

A repeating doppler shift in a star’s spectra (moving towards and then away from us) indicates its a binary star.

• True

• False

Tags

NGSS.HS-PS4-3