Lesson 3 — 6.2 + 6.3

Period 4 — Light
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Slide 1: Tekstslide
Light 6.1 + 6.2Middelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 26 slides, met tekstslides en 2 videos.

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Period 4 — Light

Slide 1 - Tekstslide

This lesson
  • Recap — 6.2
  • Studying 6.3
  • Discussing 6.3

Slide 2 - Tekstslide

Goals
  • Name the speed of light and it's name in physics
  • Explain how the speed of light us used as a unit of distance
  •  Explain how astronomers use light to study space
  •  Be able to do calculations using the speed of light

Slide 3 - Tekstslide

  • During classical explanation – have a question, raise your hand

  • While working independently – disturb the class, go to olc 2 for the rest of the lesson with extra work

  •  Not participating serious in the class (making noise, inappropriate jokes, etc.) — go to olc 2 with extra work

  • After one warning — If you stand out one more time, go to olc 2 with extra work

Slide 4 - Tekstslide

Science —The coming weeks
  •  Next week — Discussing the test + finishing up to and including paragraph 6.3

  •  The week after that — electro magnetism practical + paragraph 6.4 

Slide 5 - Tekstslide

Recap

Slide 6 - Tekstslide

Slide 7 - Tekstslide

Slide 8 - Tekstslide

6.2 Seeing things

Slide 9 - Tekstslide

Types of light
  • Emitted light
  • Reflected light
  • Transmitted light
  • Absorbed light

Slide 10 - Tekstslide

Slide 11 - Tekstslide

  • Transparant

  • Translucent

  • Opaque

Slide 12 - Tekstslide

Slide 13 - Video

Slide 14 - Tekstslide

Slide 15 - Tekstslide

Slide 16 - Tekstslide

Studying 6.3
  • Study §6.3

  •  Write down the key concepts

  • Write down any questions you have or parts you don't understand

  • Make the yellow block and workbook exercises for §6.3
      (an aeroplane travels at a speed of 900 km/h)

Slide 17 - Tekstslide


The speed of light

  • 300 000 000 m/s
  • this is called 'c'

Slide 18 - Tekstslide

Light — as a distance unit
  • Light seconds
  • light minutes
  • light hours
  • light years (ly)

Slide 19 - Tekstslide

Exercise
The closest star to our sun is Proxima Centauri. This star is 40,208,000,000,000 km away from our sun. 

The speed of light is 300 000 000 meters per second

How many light years away is Proxima Centauri from our sun?

Slide 20 - Tekstslide

Slide 21 - Tekstslide

Slide 22 - Tekstslide

Slide 23 - Tekstslide

  • The speed of light = 300 000 000 m/s — called 'c' in physics.

  • Light is used as a measure of distance (light years).

  • Astronomy studies the universe through the information in the light that reachers earth.

  • to measure the speed of light, technology had to invented that measures time in small enough intervals to be able to detect it.

  • calculations using the speed of light

Slide 24 - Tekstslide

Goals
  • Name the speed of light and it's name in physics
  • Explain how the speed of light us used as a unit of distance
  •  Explain how astronomers use light to study space
  •  Be able to do calculations using the speed of light

Slide 25 - Tekstslide

Slide 26 - Video