Star Stuff

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

Based on evidence in the table, which star would appear the dimmest from Earth’s surface?

• Star A

• Star B

• Star C

• Star D

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

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

Which of the following correctly ranks astronomical objects by size, starting with the smallest?

• earth, sun, solar system, galaxy, universe

• sun, solar system, earth, universe, galaxy

• universe, galaxy, solar system, earth, sun

• solar system, earth, sun, universe, galaxy

Tags

NGSS.MS-ESS1-3

Explosion of a high-mass star.

• White Dwarf
• Planetary Nebula
• Supernova
• Neutron Star

Tags

NGSS.HS-ESS1-3

An object whose gravity is so strong that nothing can escape.

• Planetary Nebula
• Supernova
• Neutron Star
• Black Hole

Stars are made of mostly which two gases?

• Hydrogen and Helium

• Hydrogen and Oxygen

• Hydrogen and Nitrogen

• Hydrogen and Carbon

Tags

NGSS.HS-ESS1-3

Stars give off heat and light in a process called ___________.

• nuclear fusion

• supernova

• luminosity

• spectroscopy

Tags

NGSS.HS-ESS1-1

What color of star is the hottest?

• Blue
• Red
• Yellow
• Orange

Tags

NGSS.MS-PS3-4