Physical Properties of Stars - Part One

​Physical Properties
of
Stars - Part One

​With the person sitting next to you, discuss the following question:

​What is a star?

Open Ended

Answer the question in a well compose sentence.

What is a star?

​Stars are bright balls of gas, mostly hydrogen and helium, held together by their own gravity.

Multiple Choice

What is the name of the star on the left image?

• Antares

• Polaris

• Vega

• Rigel

• ​Polaris is a yellow supergiant.

• Stays nearly still while the northern sky moves around it.

• Points due north.

• 430 light years away.

​Details of Polaris

• Brightness of 2,500 Suns.

• Polaris is also the closest and brightest Cepheid variable star – a type of star that astronomers use to figure distances to star clusters and galaxies

​Details of Polaris

​Time to explore...

​1. Pass out Physical Properties of Stars handout.
2. Choose at least 5 names of stars listed in the handout.
3. You are to do some preliminary research about the stars and write it in your notebook.
4. You are also to write the definition of the key terms in your notebook.
5. You can use this website: What are the most famous stars? https://www.universetoday.com/45775/famous-stars/