Lesson 1 — opening lesson

• Astronomy — Opening lessson
• Middelbare school
• havo, vwo
• Leerjaar 1

Astronomy

Period 4

This lesson

• Astronomy, what comes to mind?
  
• Astronomy — Pictures and videos
  
• Fun facts about our universe

Learning goals

• Name the name of our galaxy
• Name what the stars in the night sky are
• describe how Astronomy studies the universe
• Explain in your own words what is meant by the observable universe.

Astronomy

What comes to mind?

Astronomy 

Pictures & videos

A) Zooming out of the universe

B) The origins of the universe 

Zooming out of the universe

Only zooming out — After 5 minutes the video starts to zoom back in again. 

Skip this. 

Students can watch it themselves at home if they want to.

The origins of the universe 

The earth from

6 Billion kilometers

Some facts about our universe

• The earth distance from the sun is called the 'goldilocks zone' — since it's uniquely ideal for life.
  
• All stars that you see in the night sky are other suns.
• The sun makes up more than 99% of the mass in our solar system
  
• We call our galaxy 'The milky way galaxy'.
• All elements originate from suns. This means, we and everything around us are made of 'star dust'. 
•  Most of the universe is empty space (just like in atoms)
•  The earth is round, but the universe is actually flat.

1. The purpose of science is to investigate the universe so that we can come to understand it.
2. We can only investigate what we can observe.
   
3. We observe the universe through the light that reaches the earth.
   
4. If things are so far away that their light can't reach earth we are not able to observe it.
   
5. The part of the universe that science can investigate is called — The observable universe
   

The observable universe

The observable universe

• (Luckily, This is quite a lot)
  

Homework

• Read 3.1
  
• Workbook exercises 3.1 — Including E

Learning goals

• Name the name of our galaxy
• Name what the stars in the night sky are
• describe how Astronomy studies the universe
• Explain in your own words what is meant by the observable universe.