{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

Akwankyerɛ

If you need help with this lab, please watch the class recording (updated 10/15/25)

You will be using this interactive: https://starinabox.lco.global

Open the lid of your ‘Star in a Box’.

The graph is a Hertzsprung-Russell diagram, where a star’s luminosity is plotted against its temperature.

The information panels on the right allow you to compare the Sun with your star. It compares the relative radius, surface temperature, brightness (luminosity) and mass of the star to the Sun.

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1

Click the play button below the Hertzsprung-Russell diagram to show the Sun’s evolution.

You may want to adjust the speed in the lower right corner.

Name the three stages of the Sun’s life shown on the Hertzsprung–Russell diagram.

Stage 1:

Stage 3:

Stage 2 to Stage 3:

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1

Change the information panel to "brightness."

Describe the changes the Sun's luminosity (brightness) will go through between stages.

Stage 1 to Stage 2:

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1

Change the information panel to "Stages in your stars life."
What stage will the Sun spend most of its life?

White Dwarf

Main Sequence

Red Giant

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1

Change the information panel to "Mass."

Describe the changes the Sun's mass will go through between stages.

Stage 1 to Stage 2:

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1

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.
Where are low mass stars like the Sun found on the Main Sequence?

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1

Switch to a high mass star by changing the star's mass to 30.

Click the play button below the Hertzsprung-Russell diagram to show the high mass star’s evolution.

You may want to adjust the speed in the lower right corner.

Name the three stages of the high mass star’s life shown on the Hertzsprung–Russell diagram.

Stage 1:

Stage 3:

Stage 2 to Stage 3:

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1

Change the information panel to "temperature."

Describe the changes the high mass star's temperature will go through between stages.

Stage 1 to Stage 2:

At which stage in its lifecycle will the high mass star be at its hottest?

Stage 2 to Stage 3:

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1

Change the information panel to "Stages in your stars life."
What stage will the high mass star spend most of its life?

Red Giant

Main Sequence

Black Hole or Neutron Star

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1

Change the information panel to "Mass."

Describe the changes the high mass star's mass will go through between stages.

Stage 1 to Stage 2:

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1

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.
Where are high mass stars found on the Main Sequence?

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1

Consider this model of star life cycles:

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Which side (A or B) depicts the life cycle of a high mass star?

Which side (A or B) depicts the life cycle of a low mass star?

HS-ESS1-1

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6

Compare and contrast low mass and high mass stars.

	Low Mass Star	High Mass Star	Both Low & High Mass Stars
Begins as a hot blue star
Has a shorter life span
Ends as a white dwarf
Ends as a supernova
Begins on the main sequence
Begins as a "Sun" like star
Spends time as a red giant/supergiant before its death
Brighter throughout its life time
Larger overall throughout its life

HS-ESS1-1

2.06 Star Lifecycles Lab

2.06 Star Lifecycles Lab

You will be using this interactive: https://starinabox.lco.global

Open the lid of your ‘Star in a Box’.

The graph is a Hertzsprung-Russell diagram, where a star’s luminosity is plotted against its temperature.

The information panels on the right allow you to compare the Sun with your star. It compares the relative radius, surface temperature, brightness (luminosity) and mass of the star to the Sun.

Change the information panel to "Stages in your stars life."
What stage will the Sun spend most of its life?

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.
Where are low mass stars like the Sun found on the Main Sequence?

Change the information panel to "Stages in your stars life."
What stage will the high mass star spend most of its life?

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.
Where are high mass stars found on the Main Sequence?

Compare and contrast low mass and high mass stars.

You will be using this interactive: https://starinabox.lco.global

Open the lid of your ‘Star in a Box’.

The graph is a Hertzsprung-Russell diagram, where a star’s luminosity is plotted against its temperature.

The information panels on the right allow you to compare the Sun with your star. It compares the relative radius, surface temperature, brightness (luminosity) and mass of the star to the Sun.

Change the information panel to "Stages in your stars life."
What stage will the Sun spend most of its life?

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.
Where are low mass stars like the Sun found on the Main Sequence?

Change the information panel to "Stages in your stars life."
What stage will the high mass star spend most of its life?

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.
Where are high mass stars found on the Main Sequence?

Compare and contrast low mass and high mass stars.

2.06 Star Lifecycles Lab

2.06 Star Lifecycles Lab

You will be using this interactive: https://starinabox.lco.global

Open the lid of your ‘Star in a Box’.

The graph is a Hertzsprung-Russell diagram, where a star’s luminosity is plotted against its temperature.

The information panels on the right allow you to compare the Sun with your star. It compares the relative radius, surface temperature, brightness (luminosity) and mass of the star to the Sun.

Change the information panel to "Stages in your stars life."What stage will the Sun spend most of its life?

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.Where are low mass stars like the Sun found on the Main Sequence?

Change the information panel to "Stages in your stars life."What stage will the high mass star spend most of its life?

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.Where are high mass stars found on the Main Sequence?

Compare and contrast low mass and high mass stars.

You will be using this interactive: https://starinabox.lco.global

Open the lid of your ‘Star in a Box’.

The graph is a Hertzsprung-Russell diagram, where a star’s luminosity is plotted against its temperature.

The information panels on the right allow you to compare the Sun with your star. It compares the relative radius, surface temperature, brightness (luminosity) and mass of the star to the Sun.

Change the information panel to "Stages in your stars life."What stage will the Sun spend most of its life?

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.Where are low mass stars like the Sun found on the Main Sequence?

Change the information panel to "Stages in your stars life."What stage will the high mass star spend most of its life?

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.Where are high mass stars found on the Main Sequence?

Compare and contrast low mass and high mass stars.

Change the information panel to "Stages in your stars life."
What stage will the Sun spend most of its life?

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.
Where are low mass stars like the Sun found on the Main Sequence?

Change the information panel to "Stages in your stars life."
What stage will the high mass star spend most of its life?

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.
Where are high mass stars found on the Main Sequence?

Change the information panel to "Stages in your stars life."
What stage will the Sun spend most of its life?

Use the dropdown in the lower left to change the star's mass to other low numbers like 0.2, 0.65, and 2. Observe the starting location of low mass stars on the Main Sequence.
Where are low mass stars like the Sun found on the Main Sequence?

Change the information panel to "Stages in your stars life."
What stage will the high mass star spend most of its life?

Use the dropdown in the lower left to change the star's mass to other high numbers like 10, 20, and 40. Observe the starting location of high mass stars on the Main Sequence.
Where are high mass stars found on the Main Sequence?