Characteristics of Stars

Fill in the Blanks

What color are the hottest stars?

Multiple Choice

What does the Hertzsprung-Russell Diagram plot stars based on?

• Mass and size

• Absolute brightness and surface temperature

• Distance from Earth and age

• Color and speed

Multiple Choice

On the Hertzsprung-Russell Diagram, where are the main sequence stars primarily located?

• Along a band that runs from the top left to the bottom right

• Clustered at the top right corner

• Scattered randomly throughout the diagram

• Grouped at the bottom left corner

Multiple Choice

Which of the following is the best explanation for the difference in color of two bright stars in a constellation, where one appears red and the other appears blue?

• The blue star must be moving toward Earth and the red star away from Earth.

• The red star must be moving toward Earth and the blue star away from Earth.

• The red star must have a greater surface temperature compared to the blue star.

• The blue star must have a greater surface temperature compared to the red star.

Multiple Choice

How is the life cycle of a star determined?

• by fusion

• by its mass

• by the color

• by the tempature

Multiple Choice

What is a Nebula?

• an enormous cloud of gas and dust

• A type of planet

• A cloud of helium and hydrogen

• a ball of heat and energy

Multiple Choice

What is protostar

• a diagram of a star

• a ball of heat, a baby 'star'

• Whats left over from the fusion

• a ball that emits no light or heat, basically a ball of carbon

Multiple Choice

what is the main sequence

• the main part of a stars lifecycle

• The end of a stars lifecycle

• The first part of a stars lifecycle

Multiple Choice

What happens during the red giant phase

• The surface of the star expands away form the core

• The surface of the star moves towards the core

• The star explodes

Multiple Choice

a small red super giant ends up as

• a black hole

• a neutron star

• a white dwarf

• a black dwarf

• a planetary nebula

Multiple Choice

What is neutron star

• The core left over from the super nova; for high mass stars

• The core left over from the super nova; for super massive stars

• The ending of a super massive star; the gravity of the core is so strong the core collapses on itself creating a gravitational pull so strong nothing including light can escape it

Match

What is the correct

order of the life cycle of the stars?

• A large interstellar cloud of gas and dust in space that is composed mostly of hydrogen and helium

• As a result of accretion, a very young star that is still in the process of formation. NUclear Fussion has not began.

  
  

• Nuclear Fusion has occurred and the newly formed star is in this phase of its life cycle. 

  
  

• When hydrogen fusion can no longer take place inside the core of a medium to low mass star and the increased internal gravity collapse, the star is in this phase of it lifecycle.

• In the end, the Star’s gravity can no longer contain the outer layers of the Red Giant and the star ejects these layers into space in the form of an ionized gas that glows bright. his glowing gas and debris are called a his glowing gas and debris are called a ?
  

Nebula

Protostar

Main Sequence Star

Red Giant

Planetary Nebula

• Nebula

• Protostar

• Main Sequence Star

• Red Giant

• Planetary Nebula