Life Cycle of a Star: Name date:

In this activity you will journey through the stages of stellar birth, aging, and death. Today we will investigate a stars luminosity and temperature and study the main characteristics that change throughout the life of a star.

Procedure:

Please begin this activity by reading the opening remarks(pg 1) then follow the table of contents to answer the questions or complete each task. Be sure to follow directions carefully and complete each task before moving on to the next.

Protostar: A STAR IS BORN(pg 2)

A. What is a nebula?

What are the primary gases of interstellar nebula?

B. What two forces are in balance or equal in the protostar when it reaches equilibrium?

C. What are the two options when a protostar is in equilibrium?

1. Option 1:

2. Option 2:

Stars: (pg3)

A. Please complete the Interactive Lab for Stars at the beginning of their life cycles:

Print your results- make sure to include your name on the answer sheet. Proceed to next activity.

Equilibrium Life Goal of a Star(pg4)

B.Please complete the Interactive Lab for the Equilibrium Cycle. Record your answers in the table below by circling the correct response in the box.

Pressure / Gravity / Temperature
STEP 1 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 2 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 3 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 4 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 5 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

Try your hand at the Star Quiz (part 1)don’t spend too much time here, you have a lot to do!

Stars: The beginning of the end(pg 5)

C.Please complete the Interactive Lab for the Helium Burning Process. Record your answers in the table below by circling the correct response in the box.

Pressure / Gravity / Temperature
STEP 1 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 2 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 3 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 4 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 5 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

Test your knowledge! Star Quiz (part 2)

Stars: The End of a Star(pg6)

D. Please complete the Interactive Lab for the Carbon Burning Process. Record your answers in the table below by circling the correct response in the box.

Pressure / Gravity / Temperature
STEP 1 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 2 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 3 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 4 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

STEP 5 /
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease
/
  • increase
  • no change
  • decrease

E. Please complete the Interactive Lab for the End of their Life Cycle. Save your answers after each star cycle. Print your results- make sure to include your name on the answer sheet.Proceed to next activity.

Hertzsprung-Russell Diagram(pg 7)

H & R Interactive lab: Complete the Hertsprung-Russell Diagram by filling in the table below with the correct response.

Results

/

(a)

/

(b)

/

(c)

/

(d)

/

(e)

Temperature

Brightness

Applications of the HR Diagram(pg 8)

F. Please complete the Interactive Lab for the Application of the HR Diagram. When you have completed the interactive; print the answers to your written responses. Make sure to put your name on your answer sheet.

Interactive HR Diagram(pg 9)

G.Please complete More HR diagram Funthe Interactive Version with Questions

Please read and complete each question in the interactive. Circle the correct response to each question and record your answer below. You will need to make the correct response in the interactive before it will advance to the next question.

1. abcde

2.abcde

3.abcde

4.abcde

5.abcde

6.abcde

7.abcde

8.abcde

9.abcde

10.abcde

11.abcde

12.abcde

13.abcde

14.abcde

You are done! Please staple all of your answer sheets for

Interactive Lab

Stars at the beginning of their life cycles:

Helium Burning Process.

Carbon Burning Process.

End of their Life Cycle.

Application of the HR Diagram

to this one and turn it in.