True or False. When the white
light from
the Sun hits the leaf, the leaf absorbs all
the other colours even green.
False. except green
True or False. Violet light is refracted the most because it has the shortest wavelength
True
When a water droplet breaks light into the 7 colours what do we see? R_____w
Rainbow
True or False. When
you mix two primary colours you get tertiary colours.
False. Secondary colors
True or False. A black hat would absorb all the colors.
True
Red has the highest frequency among the color spectrum.
False
What is white light?
It is the combination 7 different colors (ROYGBIV)
True or False. A
white hat would reflect all no colour at all.
False
What type of photreceptor that is sensitive to colours? C_____
Cones
A
prism splits a ray of white light into a spectrum of colours.
This
is known as d________n.
dispersion
Blue + green = __________
Cyan
True or False. Is Light a Wave?
True, It is an electromagnetic wave
What are the three primary colours?
Red, Blue, Green
What is the only color that is reflected by a red car?
Red only
what is the phenomena of breaking of light into 7 colours called? D________n
Dispersion
What is the speed of light in vacuum?
300 000 km/s or 300 000 000 m/s
What are the three examples of secondar colors?
cyan, yellow, and magenta
The
spectrum of white light is continuous. There are GAPS between the colours.
FALSE-no gaps
True or False. You
get white light when you mix all three colours of light
True
True or False. You can never
see a rainbow when the Sun is in front of you.
True
Red + green = __________
Yellow
Red + blue =___________
Magenta
What are the colors being reflected by a red car?
All the colors except red
True or False. Objects look coloured because they reflect certain colours of light and absorb others.
True
Violet has the highest frequency among the color spectrum.
True
True or False. Red light is refracted least because
it has the
longest wavelength.
True