- Computer con accesso a internet
- Foglio di lavoro della 'Stella in scatola'
Star in a Box app is available at http://starinabox.lco.global
Click the play button below the Hertzsprung-Russell diagram to show the Sun’s evolution.
Name the three stages of the Sun’s life shown on the Hertzsprung-Russell diagram.
Use the table below to describe the changes the Sun will go through between stages.
Radius | Luminosity | Temperature | Mass | |
---|---|---|---|---|
Stage 1 to Stage 2 |
. . . Increase
From: . . . R sun To: . . . R sun |
. . . Increase
From: . . . L sun To: . . . L sun |
. . . Increase
From: . . . K To: . . . K |
. . . Increase
From: . . . M sun To: . . . M sun |
Stage 2 to Stage 3 |
. . . Increase
From: . . . R sun To: . . . R sun |
. . . Increase
From: . . . L sun To: . . . L sun |
. . . Increase
From: . . . K To: . . . K |
. . . Increase
From: . . . M sun To: . . . M sun |
Look at the light bulb tab:
Look at the thermometer tab:
Look at the pie chart tab:
Look at the mass tab:
What type of star will the Sun be at the end of its life?
What is the total lifetime of the Sun?
Try out a few different masses then answer the following questions.
Using the Hertzsprung-Russell diagram:
Where on the main sequence do the higher mass stars start?
There are three possible outcomes for the final stage of a stars life depending on its initial mass. Name these 3 possible final stages.
Complete the table below, filling in a row for each of the different masses. Hint: You may find it easier to use the data table on the ‘Star in a Box’ to find the exact values.
Mass of Star (M sun ) | Maximum Radius (R sun ) | Maximum Luminosity (L sun )(Brightness) | Maximum Temperature (K) | Name of Final Stage | Total Lifespan (Myr) |
---|---|---|---|---|---|
0.2 | |||||
1 | |||||
6 | |||||
20 | |||||
40 |
Comparing the temperatures:
Comparing the luminosities:
What type of star will the Sun become after it leaves the Main Sequence?
What main factor determines the stages a star will follow after the main sequence?
The mass of the star Betelgeuse is much greater than the mass of the Sun; therefore, its total lifetime will be:
Compared to when it joins the Main Sequence, a star’s mass at the end of its life will:
The Sun will spend most of its life in what stage?
(solutions at: http://goo.gl/tlaEH1)
L'accuratezza delle loro risposte alle domande può fornire le basi della valutazione dell'apprendimento degli studenti. Tuttavia si possono ottenere risposte più dettagliate parlando individualmente agli studenti del loro apprendimento.
Country | Level | Subject | Exam Board | Section |
---|---|---|---|---|
UK | GCSE | Physics | AQA Science A | Not in current curriculum |
UK | GCSE | Physics | Edexcel | P1.3: 11, 12, 13 |
UK | GCSE | Physics | OCR A | P7.3.8; P7.4: 22-28 |
UK | GCSE | Physics | OCR B | P2h |
UK | GCSE | Physics | WJEC | Physics 3.5: b, c, d, g, j |
UK | GCSE | Astrophysics | Edexcel | Unit 1.3: 3o-q, 4a, 4c |
UK | A level | Physics | AQA | 3.9.2.5 |
UK | A level | Physics | Edexcel | Topic 10: 159, 160 |
UK | A level | Physics | OCR A | 5.5.1: c, e, g |
UK | A level | Physics | OCR B | 5.1.3: b, c |
UK | A level | Physics | WJEC | Unit 1 6d) |
UK | KS3 | Physics | - | Space Physics: Our Sun as a Star |
UK | KS2: Year 5 | Science | - | Earth and Space |
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L'attività si conclude quando gli studenti hanno completato il foglio di lavoro. L'insegnante dovrebbe discutere le varie risposte che gli studenti hanno fornito con particolare attenzione a quelle delle ultime domande.
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