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Science 4-6 > 4-6 > Flashcards

4-6 Flashcards

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1
Q

What does a refracting telescope use?

A

Lens

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2
Q

What does a reflecting telescope use?

A

Mirror

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3
Q

What do binoculars use?

A

Prisms

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4
Q

What is near sightedness?

A

You can see things up close but not far away eye looks like a football and image forms in front of the retina

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5
Q

What is far sightedness?

A

You can see things far away lens you need is double convex the image is forming behind retina like an upright egg

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6
Q

What is laser eye surgery

A
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7
Q

What is laser eye surgery

A

Surgery where they reshape your cornea so that light focuses on the retina clearly

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8
Q

What does the iris do

A

It controls the amount of light that can enter through the pupil Color is determined by genetics

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9
Q

What happens when white light is refracted into different colours

A

It turns in to a spectrum

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10
Q

ROYGBIV stands for…

A

Red, orange, yellow, green, blue, indigo and purple

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11
Q

When we see a black object all other colours are…

A

Absorbed

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12
Q

When we see white light every Color is being

A

Reflected

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13
Q

What are the primary colours of light

A

Red green blue

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14
Q

All modern technology uses…

A

Green red and blue

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15
Q

Red+blue+green will make

A

White light

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16
Q

Blue+red

A

Magenta

17
Q

Red+green

A

Yellow

18
Q

Blue+green

A

Cyan

19
Q

Rod cells detect…

A
20
Q

Rod cells detect…

A

Light

21
Q

Come cells detect

A

Color

22
Q

Our eyes have three different types of cones…

A

Red green and blue

23
Q

If a person has problems with the rods I think hero eyes it’s called

A

Blindness

24
Q

If a person has problem in their cone cells then they have

A

Color blindness

25
Q

Color blindness is most lily from

A

Genetics

26
Q

Who are the most common people to experience Color blindness

A

Men

27
Q

Who first observe light going through a prism

A

Sir Isaac newton

28
Q

What does the cornea do

A

Outside of the eyeball

29
Q

Double concave lens…

A

Causes the light to spread out

30
Q

Double convex lens causes

A

The light to come together at a focal point

31
Q

The pupil…

A

Coloured part of your eye caused by genetics

Science 4-6 (1 decks)

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