Ch 4 Astronomy Lesson 3 Characteristics of Stars

A __________________ is a device that breaks light into colors and produces an image of the resulting spectrum.

• Hertsprung-Russell 
• spectrograph

True or False:
Astronomers classify stars by color, temperature, size, composition, and brightness. 

• True
• False

What does a star's color reveal?

• location
• surface temperature
• how old it is

What color are the coolest stars that are around 3,200 degrees Celscius?

• appear red
• appear blue

The hottest stars  with surface temperatures of about 5,500 degrees Celscius appear____________.

• blueish color
• reddish color
• yellow
• orange

True or False:
Many stars are about the size of the sun.

• True
• False

What are very large stars called ?

• supergiant stars
• big stars
• white dwarfs

Which stars are about the size of Earth?

• white dwars
• supergiants
• neutron stars

___________ are stars that are smaller than Earth. 

• white dwarfs
• neutron stars
• supergiants

A star's ___________________is its brightness as seen from Earth.

• apparent brightness
• absolute brightness