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YR2_T1_LSN10
Discussion PO + Topic 1.4 
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YR2_T1_LSN10
Discussion PO + Topic 1.4 

Slide 1 - Diapositive

Common mistakes
Not reading the question properly
  • Forgot formula
  • Forgot calculation
  • Forgot units 

Slide 2 - Diapositive

Discussing PO
  • Check your answers
  • Do you understand your mistakes? 

Write down in your notebook what 
you can do better next time
timer
10:00

Slide 3 - Diapositive

Topic 1.4 - Learning Goals:
I can…

  • Explain what the different parts of the electromagnetic spectrum are and where the different types of waves are found
  • Label the different parts of the human eye and know the function of each part
  • Understand the purpose of the rods and cones in the human eye
  • Explain how the eyes lens bends to focus light, allowing us to see
  • Explain what the problem is for people that are nearsighted or farsighted and which type of lens they need  

Slide 4 - Diapositive

Topic 1.4 - Key Words:
  • Accommodation
  • Aqueous humor
  • Cones
  • Cornea
  • Farsighted
  • Impulses
  • Iris
  • Lens
  • Light

  • Nearsighted
  • Negative lens
  • Optic nerve 
  • Positive lens
  • Pupil
  • Retina
  • Rods
  • Sclera
  • Vitreous body

Slide 5 - Diapositive

1.4 - Electromagnetic spectrum:
Light is a form of energy that travels in waves
The whole spectrum spans a range of waves and frequencies
Part we can see: visible part of the spectrum
Part we cannot see: infrared and ultraviolet part of the spectrum



Slide 6 - Diapositive

1.4 - Electromagnetic spectrum:

Slide 7 - Diapositive

1.4 - Eyes

Slide 8 - Diapositive

1.4 - Eyes

Slide 9 - Diapositive

1.4 - Seeing color
Light reacts to cells in the retina.
The cells react to light and send impulses, messages, to your brain

Two different types of cells:
  • Rod cells give information on contrast, the black and white picture
  • Cone cells give information on color: red, green and blue


Slide 10 - Diapositive

1.4 - Accomodation
Accommodation: the lens changes its shape in order to see objects sharply from both far away and nearby

Slide 11 - Diapositive

1.4 - Nearsighted and farsighted

Slide 12 - Diapositive

Hw for next time:
Lab lesson:
  • Find a lab partner (only pairs!)
  • Read the worksheet: Salt and the boiling point of water 

Theory lesson:
  • Complete exercises of Topic 1.4 in your textbook (p34-39)
  • Study Glossary of Topic 1.4 in StudyGo


Slide 13 - Diapositive