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Science Year 10 Half Yearly > Let There be Light > Flashcards

Let There be Light Flashcards

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1
Q

Refraction : When light travels to a less dense medium it ______

A

Speeds up, Light bends away from the normal

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2
Q

Refraction : When light travels to a more dense medium it ______

A

Slows down, Light bends towards the normal

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3
Q

Law of Reflection

A

The angle of incidence is equal to the angle of reflected

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4
Q

Name the 16 Structures of the Eye

A
  1. Vitreous Humour
  2. Fovea Centralis
  3. Blind Spot
  4. Optic Nerve
  5. Blood Vessels
  6. Retina
  7. Choroid
  8. Sclera
  9. Suspensory Ligaments
  10. Iris
  11. Pupil
  12. Cornea
  13. Aqueous Humour
  14. Lens
  15. Ciliary Muscle
  16. Rectus Muscle
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5
Q

Sclera

A

The outside part of the eye. Protects Inner contents of the eye

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6
Q

Choroid Layer

A

2nd part of the eye wall. Prevents reflection inside the eye by absorbing stray light rays

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7
Q

Cornea

A

Transparent side of the Sclera, Refracts the incoming light so it goes into the pupil

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8
Q

Aqueous Humour

A

Clear watery fluid infront of the eye, Keeps cornea bulged out

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9
Q

Iris

A

Coloured part of the eye, controls amount of light entering pupil

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10
Q

Pupil

A

Opening (hole) in the iris, Allows light to travel towards the lens so it can reach the retina

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11
Q

Lens

A

Transparent, Bi-convex lens, completes process of refraction, so that the rays from each point on an object are focused on the retina

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12
Q

Ciliary Muscles

A

Muscles attached to the lens - able to contract and relax. able to stretch the lens to suit viewing distances

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13
Q

Suspensory Ligaments

A

Attach Ciliary Muscles to the lens so they can shape the lens into various shapes

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14
Q

Vitreous Humour

A

Jelly-like fluid inside of the eye

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15
Q

Retina

A

The lining in the back of the eye containing photo receptors. The image forms here (upside down) and your brain interprets it and flips it back around

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16
Q

Optic Nerve

A

Sensory Neurones at the back of the eye, carries the information from the retina to the brain

17
Q

Blind spot

A

The spot where the optic nerve enters the eye

18
Q

What is the absorption of light

A

When white light goes through coloured material, all of the colours in light that aren’t that colour of the material get absorbed and only that colour comes through.

19
Q

What is the scattering of light?

A

When the light that enter’s earth atmosphere hits the air particles and scatters across the sky

Science Year 10 Half Yearly (7 decks)

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