WorksheetsLIGHT & SOUND # YEARLY EXAM REVISION
Total questions: 20
Worksheet time: 12mins
The odd one among the following is:
Light travels in a _________ line.
straight
zigzag
curved
oval
(a) objects are visible only when light from a luminous object falls on them.
Shadows formed by the Sun are _____________ during the morning and evening hours.
longest
shortest
medium size
narrow
The size of a shadow depends on how close an object is to the source of light.
True
False
The time taken for sunlight to reach earth is :
7 seconds
8 seconds
8 minutes
9 minutes
Which of the following statements are true for opaque objects?
They allow light to pass through them.
They form very dark shadows.
They do not allow any light to pass through them.
Books, frosted glass and cling film are opaque objects.
The type of object shown here is:
Opaque
Transparent
Translucent
Luminous
Observe the picture. Which of the following conditions wiill be caused by this ?
Sleep disturbance
Damage to ear
Happiness
Proper sleep
Loud and unpleasant sounds are called (a)
Which of the following measures help in reducing noise pollution?
Honk frequently while driving.
Do not set off loud fire crackers.
Play music very loudly.
Reduce the use of loud speakers.
Shadows are shortest at __________ .
Morning
Noon
Evening
Night
The dark shape formed on a surface when light is blocked by an object is called (a) .
All sounds that we hear are pleasant.
True
False
Sun is the natural source of light for Earth.
True
False
Cling film is an example for (a) object.
Vibrations in an object produce ___________ .
light
sound
noise
shadow
Choose examples for noise:
Sounds from factories.
Chirping of a bird.
Moving trains.
Sound of guitar.
Based on the ability to pass light through them, the order of windows (A,B C) in the picture is:
Opaque, Transparent, Translucent.
Transparent, Translucent, Opaque.
Translucent, Opaque, Transparent.
Opaque, Translucent, Transparent.
This type of shadow is formed during ___________.
Evening
Morning
Midday
Night
