Stars

After the main sequence, a low mass star becomes a

• black dwarf

• protostar

• red giant

• supergiant

Felix examined several photos of stars. To compare their temperatures, he looked at the colors of the stars. He organized the photos in order from coolest to hottest. Which of these answers shows the correct order?

• red, yellow, white, blue

• white, blue, yellow, red

• yellow, white, blue, red

• blue, yellow, white, red

Which of the following is NOT a characteristic used to classify stars?

• Color

• Temperature

• Size

• Shape

Which of the following is a name used for stars:

• Neutron

• Supergiant

• White dwarf

• All of the above

Tags

NGSS.HS-ESS1-3

The Sun is the biggest star in the sky.

• True

• False

Tags

NGSS.HS-ESS1-1

Stars are made of mostly which two gases?

• Hydrogen and Helium

• Hydrogen and Oxygen

• Hydrogen and Nitrogen

• Hydrogen and Carbon

Which of the following statements best relates a star’s color to its surface temperature?

• blue stars have a relatively low temperature

• red stars have a relatively high temperature

• blue-white stars have a relatively low temperature

• yellow stars have a relatively low temperature

A scientist discovers a new star. It is blue-white and is about 20,000 K. Which star is it most similar to?

• Sun

• Rigel

• Vega

• Canopus

Absolute magnitude is defined as…

• mass of a star

• color of a star

• brightness of a star, as it appears from Earth

• brightness of a star independent from the distance of Earth

About 90 percent of the stars in the universe, including the sun, are main sequence stars. What do all main sequence stars have in common?

• All main sequence stars are yellow like our sun.

• All main sequence stars are as bright as our sun.

• They are all undergoing fusion of helium into carbon within their cores

• They are undergoing fusion of hydrogen into helium within their cores

Tags

NGSS.HS-ESS1-1