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WorksheetsAll about Light
Total questions: 40
Worksheet time: 21mins
Light always travels in a ____________ line.
straight
curved
elliptical
none
The intensity of the light can be measured using a _______________.
intensity
volt meter
stop watch
light meter
The unit of light intensity.
Meter
lamp
lux
volt
________________ often use light meter.
doctors
office workers
photographers
layers
As one gets further (far) from a light source, the intensity of light ______________.
increases
decreases
A form of energy that we can see.
Light
Sound
Heat
Force
100 000 lux
This light intensity can usually be found in ______________.
shady place
starlight
direct sunlight
overcast day
Which of the following is not important to measure light intensity?
For safety
For plant growth
For listening
For photographer
Why does a banana look yellow?
it reflects yellow wavelengths of light and absorbs most other wavelengths
it absorbs yellow wavelengths of light and reflects most other wavelengths
what is the correct order of the visible light spectrum?
red, yellow, green, orange, blue, violet and indigo
indigo, blue, violet, orange, yellow, green and red
violet, blue, indigo, green, yellow, orange and red
red, orange, yellow, green, blue, indigo and violet
How the shadow formed at 12 pm?
short
long
How the shadow formed at 7 am?
short
long
Choose the correct shadow!
What happens to the size of a shadow as you move the object closer to the light source.
it gets larger
it gets smaller
nothing
it turns into a different shape shadow
When an object moves closer to a light source, its shadow...
gets smaller
gets bigger
changes shape
stays the same size
The further the doll (object) to the wall (screen), the ___________ the shadow size.
smaller
bigger
Shadows do not depend on the ________ of the object.
size
colour
shape
light
The factors that effecting the size of the shadows are ..... (2 answers)
the position of light source
the distance between the light source and object
the distance between the object and the screen
the orientation of the object
A __________ is a transparent object with refracting surfaces that separate white light into a spectrum of colors.
rainbow
prism
cloud
What do you feel when you see rainbow ?
How many colors are in the rainbow ?
Where will the tree's shadow be?
A
B
C
The marks on a sun dial show __________ intervals
shadow
time
season
marks
A shadows length is the shortest at ___________
noon
Sun rise
Sun set
4:00 pm
What time is it in picture A
12 P.M.
8 A.M.
4 P.M.
12 A.M.
What time is it in picture B
12 P.M.
8 A.M.
4 P.M.
12 A.M.
What time is it in picture C
12 P.M.
8 A.M.
4 P.M.
12 A.M.
When the sun rises in the morning, your shadow is _______ and points ________
short, west
long, west
short, east
long, east
A sundial is used to ...
tell the time of day
measure temperature
tell the day of the year
measure the tenths of objects
