Science quiz light

What does photosynthesis require?

pigments

When plants gather the suns energy with light what molecules are they absorbing?

Pigments

Where are pigments found?

Inside a chloroplast

What is the main energy absorbing molecule in green plants?

Chlorophyll

What are carotenoids?

They are also pigments they look yellow, orange, and red

What does light contain a mixture of?

Wavelengths

How do we see color?

Light wave lengths are reflected off of object then bounce back to our eyes

Does chlorophyll absorb the green or reflect it?

Reflects

Why do some objects look black?

Black dye absorbs all of the wavelengths of light

Why does wearing a black t shirt in the summer make you feel warmer?

When wavelengths are absorbed on the black object so is the energy of the wave

Why do white objects appear white?

The dye in white objects reflects of the wavelengths of light

Why does wearing a white t shirt make you feel colder/cooler

Little energy is absorbed so wearing white clothing is colder/cooler

What are the 2 types of chlorophyll molecules?

Chlorophyll A is the main photosynthetic pigment and chlorophyll B

What are the other pigments called?

Xanthophyll(yellow or brown), Carotene (orange ir red), Cartenoids

Why do plants have other pigments like carotenoids?

Chlorophyll is not good at absorbing green light and the other pigments help absorb some wavelengths chlorophyll doesnt so plants can use more energy of the suns energy

Complete the sentance

Green leaves have both chlorophyll and cartenoids. but the huge amount of chlorophyll. the colors and leaves usually look green

All the time and hides

Why do the leaves change during fall and winter?

In fall the chlorophyll production slows as the trees shut down and photosynthesis stops for the winter then we see the carotenoid colors that are usually hudden by chlorophyll