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Science Olympaid 2025 > Optics > Flashcards

Optics Flashcards

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1
Q

What is the visible spectrum?

A

The range of wavelengths of light that can be seen by the human eye, typically from about 380 nm to 750 nm.

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2
Q

True or False: Humans can perceive all wavelengths of light.

A

False

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3
Q

Fill in the blank: The primary colors of light are ______, ______, and ______.

A

red, green, blue

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4
Q

What do we call colors that are created by mixing primary colors?

A

Secondary colors

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5
Q

Which color is perceived when red and green light are mixed?

A

Yellow

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6
Q

What is the phenomenon called when colors are perceived differently under varying lighting conditions?

A

Color constancy

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7
Q

What is the role of cones in human vision?

A

Cones are photoreceptor cells in the retina that detect color.

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8
Q

True or False: There are three types of cones in the human eye.

A

True

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9
Q

What are the three types of cones responsible for detecting?

A

Short (blue), medium (green), and long (red) wavelengths.

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10
Q

What is color blindness?

A

A condition where an individual has difficulty distinguishing certain colors.

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11
Q

Which type of color blindness is most common?

A

Red-green color blindness

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12
Q

Fill in the blank: The theory that explains how colors are perceived in terms of opposing pairs is called the ______ theory.

A

Opponent-process

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13
Q

What is the additive color model?

A

A model that describes how colors are created by combining light of different colors.

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14
Q

What is the subtractive color model?

A

A model that describes how colors are produced by mixing pigments or dyes.

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15
Q

True or False: The color wheel is a tool used to understand color relationships.

A

True

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16
Q

What are complementary colors?

A

Colors that are opposite each other on the color wheel.

17
Q

What effect does saturation have on color perception?

A

Saturation refers to the intensity or purity of a color; higher saturation means more vivid colors.

18
Q

What is the difference between hue and shade?

A

Hue refers to the color itself, while shade refers to a color mixed with black.

19
Q

Fill in the blank: The brightness of a color is referred to as its ______.

A

value

20
Q

What is the significance of color temperature in lighting?

A

Color temperature affects the appearance of colors in a scene, influencing mood and perception.

21
Q

What is the psychological effect of the color blue?

A

Blue is often associated with calmness and serenity.

22
Q

Which color is commonly associated with danger?

A

Red

23
Q

What is the term for colors that are next to each other on the color wheel?

A

Analogous colors

24
Q

What is the role of rods in human vision?

A

Rods are photoreceptor cells that detect light intensity and are responsible for vision in low light.

25
Q

True or False: The human eye has more cones than rods.

A

False

26
Q

What is the concept of color harmony?

A

The pleasing arrangement of colors that work well together.

27
Q

What is the impact of cultural differences on color perception?

A

Cultural contexts can influence the meanings and emotions associated with different colors.

28
Q

What is the term for the ability to identify colors in different lighting?

A

Color discrimination

29
Q

What is a color wheel?

A

A circular diagram that shows the relationships between colors.

30
Q

Fill in the blank: The phenomenon where colors appear differently based on surrounding colors is known as ______.

A

Simultaneous contrast

31
Q

What is the definition of chromaticity?

A

The quality of a color that covers its hue and saturation.

32
Q

True or False: Warm colors tend to evoke feelings of warmth and comfort.

A

True

33
Q

What is the significance of color in branding?

A

Colors can influence consumer perception and emotional response to a brand.

34
Q

What is the psychological effect of the color green?

A

Green is often associated with nature, growth, and tranquility.

35
Q

What does the term ‘color theory’ refer to?

A

The study of how colors interact, combine, and the effects they have on human emotions and perceptions.

Science Olympaid 2025 (15 decks)

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