Lesson 7 — Stars

• Nask
• Middelbare school
• havo, vwo
• Leerjaar 1

Astronomy

Stars

This lesson

• The life cycle of a star - recap
• Exercises
• The two pole stars
• Constelations

Learning goals

• Describe the life cycle of a star.
  
• Explain what the two pole stars are and know their names.
• Explain what is meant by constellations and why we see different ones throughout the year.
• Give examples of constilations.

The life cycle of a star

Stellar 

nebula

1) What are the two pole stars and what are their names?

2) What is the process called that occurs in stars that generates the energy they radiate out in the form of light?

3) When you take a photograph of the night sky over several hours you will get a picture like the one below. Why do the stars appear to move?

4) What is a constellation?

5) Why do we see different constellations at night through out the year? 

6) In 2022 the Aquarius constellation was most visible between October and November, when will the Aquarius constellation be most visible in 2023?

The two pole stars

Polaris

Sigma octantis

Nuclear fusion

The constellations

• A collection of stars in which we can see a pattern 

• This idea is estimated to originate in pre-historic times
  
• Easier to recognise that individual stars
  
• The constellations can give us a map of the night sky
  

Most visible during October and November (from the Northern hemisphere)

Aquarius

Most visible during December 

(from the Northern hemisphere)

Aries

Gemini

Most visible during April and May 

(from the Northern hemisphere)

1) What are the two pole stars and what are their names?

2) What is the process called that occurs in stars that generates the energy they radiate out in the form of light?

3) When you take a photograph of the night sky over several hours you will get a picture like the one below. Why do the stars appear to move?

4) What is a constellation?

5) Why do we see different constellations at night through out the year? 

6) In 2022 the Aquarius constellation was most visible between October and November, when will the Aquarius constellation be most visible in 2023?

Homework

• Read paragraph 3.5
  
• Do the yellow block exercises of 3.5
  

Learning goals

• Describe the life cycle of a star.
  
• Explain what the two pole stars are and know their names.
• Explain what is meant by constellations and why we see different ones throughout the year.
• Give examples of constilations.