HR Diagram - Connection

Multiple Choice

Stars are round due to a balance of forces. What is the name of the balance?

• radiation pressure

• nuclear fusion

• gravity

• hydrostatic equilibrium

Multiple Select

What processes occur inside stars due to heat and pressure?
(choose 2 answers)

• Nucleosynthesis

• Photosynthesis

• Fusion

• Crystallization

Multiple Choice

What is the closest star to Earth?

• Proxima Centauri

• Alpha Centauri

• Sol

• Sirius

Multiple Choice

Stars are much more ______ than planets.

• Smaller

• Massive

• Lighter

• Cooler

Multiple Choice

In the diagram given, what happens as we move to the left?

• Stars Get Larger
• Stars get Colder
• Stars get hotter

Multiple Choice

As a whole, Giants are considered hotter than White Dwarfs.

• True
• False

Multiple Choice

Which star is the coldest?

• Yellow Star
• Red Star
• Orange Star
• Blue Star

Multiple Choice

On the Hertzsprung-Russell diagram, our sun is a __________?

• white dwarf

• red giant

• supergiant

• main sequence star

Multiple Choice

Which star has the lowest temperature?

• A
• B
• C
• D

Multiple Choice

What determines the color of a star? 

• It's size
• It's temperature
• It's composition
• They are all the same color 

Multiple Choice

As you move from the bottom to the top of the H R diagram the __________ changes.

• Temperature
• Luminosity or Brightness

Multiple Choice

Aldebaran is a ____________

• red giant

• white dwarf

• main sequence star

• supergiant

Multiple Choice

Compared to the Sun, Spica is .......

• hotter and brighter

• cooler and brighter

• hotter and dimmer

• cooler and dimmer

Multiple Choice

Compared to the Sun, Arcturus is .......

• hotter and brighter

• cooler and brighter

• hotter and dimmer

• cooler and dimmer

Hotspot

Click on the area where you would plot a star with the following characteristics:

Temperature: 10,000 K

Luminosity: 10,000

Hotspot

Click on the area where you would plot a star with the following characteristics:

Temperature: 6,500 K

Luminosity: 100

Hotspot

Click on the area where you would plot a star with the following characteristics:

Temperature: 3,800 K

Luminosity: 0.001

Hotspot

Click on the area where you would plot a star with the following characteristics:

Temperature: 25,000 K

Luminosity: 1000

Multiple Choice

Which of the following will give the best indication of a star's temperature?

• the distance of the star

• the radius of the star

• the color of the star

• the age of the star

Multiple Choice

Which of the following stars is the hottest?

• A white star

• A blue star

• A red star

• An orange star

Labelling

Drag the labels to the correct place on the HR diagram

Drag labels to their correct position on the image

Supergiants

Blue Giants

White Dwarfs

Main Sequence

Giants