PIGMENTS

Question 1

What is the role of the ozone layer in the atmosphere?

Answer 1

Filters wavelengths of solar energy before it reaches Earth’s surface

Question 2

How do we see colors?

Answer 2

Some light is absorbed by pigments, the rest is reflected. The reflected wavelength is the color we see

Question 3

What color do we see leaves as?

Answer 3

Green

Question 4

What are Anthocyanins?

Answer 4

Accessory pigments that help protect leaves from excessive sunlight by absorbing it

Question 5

What wavelengths do Anthocyanins absorb?

Answer 5

• Yellow
• Blue-green

Question 6

What do Anthocyanins reflect?

Answer 6

• Red
• Purple
• Blue
• Black

Question 7

What is the relationship between wavelength and energy?

Answer 7

Inversely proportional

Question 8

What happens when the wavelength increases?

Answer 8

Energy decreases

Question 9

What constitutes the Electromagnetic Spectrum?

Answer 9

The entire range of wavelengths of electromagnetic radiation

Question 10

What is light described as?

Answer 10

A form of energy known as electromagnetic energy

Question 11

How does light travel?

Answer 11

In the form of waves

Question 12

What are photons?

Answer 12

Tiny particles or packets of energy

Question 13

What is the definition of wavelength?

Answer 13

Distance between waves

Question 14

What are the main types of plant pigments?

Answer 14

• Chlorophyll
• Carotenoids
• Anthocyanins

Question 15

What is the primary pigment of photosynthesis?

Answer 15

Chlorophyll a

Question 16

What color does Chlorophyll a reflect?

Answer 16

Blue-green

Question 17

What is the role of Chlorophyll b?

Answer 17

An accessory pigment that collects energy and passes it to chlorophyll a

Question 18

What color does Chlorophyll b reflect?

Answer 18

Yellow-green

Question 19

What is the function of pigments in plants?

Answer 19

To absorb specific wavelengths of visible light

Question 20

What happens when a pigment absorbs light?

Answer 20

It goes from a ground state to an excited state

Question 21

What occurs when excited electrons fall back to the ground state?

Answer 21

Photons are released as excessive energy

Question 22

What can the released excessive energy from pigments be used for?

Answer 22

• Passed on to the next molecule
• Released as heat

Question 23

What is photosynthesis?

Answer 23

The process that converts solar energy to chemical energy

Question 24

What color do pigments absorb that is crucial for photosynthesis?

Answer 24

Specific wavelengths of visible light

Question 25

What practical example illustrates the effect of color on heat absorption?

Answer 25

A black car is hot when touched on a sunny day; a white car is cooler

Question 26

Fill in the blank: PIGMENTS ARE IMPORTANT IN _______.

Answer 26

CAPTURING LIGHT ENERGY

Question 27

What is the effect of light-colored clothing on sunny days?

Answer 27

It is better to wear light-colored clothing to reflect more wavelengths of visible light

Question 28

light exists as

Answer 28

photons

Question 29

What is a distance or packets of energy called?

Answer 29

Wavelength

Question 30

as energy increases, wavelength

Answer 30

decreases

Question 31

the shorter the wavelight

Answer 31

the more energy it has (gamma ray has the shortest wavelength)

Question 32

How do we see colors?

Answer 32

When visible light strikes any objects, some light is absorbed by pigments, the rest of the light is reflected off of the object.

Question 33

What are pigments?

Answer 33

- are molecules/substances that absorbs visible light - it only absorbs specific wavelengths of the visible light

Question 34

Pigments are important in

Answer 34

capturing light energy

Question 35

As pigments absorbs specific wavelengths or visible light, it also absorbs

Answer 35

protons of light (energy)

Question 36

When a pigment absorbs light, it goes from ground state to an

Answer 36

excited state

Question 37

Excited state are _______ that's why electrons falls back to the ground state. Thus, protons are released as ________.

Answer 37

unstable; excessive energy

Question 38

The three main types of Plant Pigments

Answer 38

Chlorophyll Carotenoids Anthocyanins

Question 39

The two types of pigments according to function

Answer 39

Primary Pigments Accessory Pigments

Question 40

It is the main plant pigment that absorbs energy from sunlight to drive photosynthesis

Answer 40

Primary pigments

Question 41

Also absorbs energy from the sunlight but channels it to the primary pigments

Answer 41

Accessory Pigments

Question 42

It absorbs violet, blue and red wavelengths and reflects green

Answer 42

Chlorophyll

Question 43

A primary pigment of photosynthesis. Reflects a blue-green color

Answer 43

Chlorophyll a

Question 44

an accessory pigment that collects energy and passes to chlorophyll a. Reflects a yellow-green color

Answer 44

Chlorophyll b

Question 45

Are accessory pigment (broadens the spectrum of colors that can drive photosynthesis

Answer 45

Carotenoids

Question 46

absorbs violet and blue-green wavelengths and reflects yellow and orange

Answer 46

carotenoids

Question 47

An accessory pigment (but never participates in photosynthesis). Helps protect leaves from excessive sunlight by absorbing it.

Answer 47

Antocyanins

Question 48

Antocyanins absorbs and reflects?

Answer 48

yellow and blue-green; red, purple, blue and black