LIGHT & SOUND # YEARLY EXAM REVISION

The odd one among the following is:

• 
• 
• 
• 

Tags

NGSS.MS-ESS1-1

Light travels in a _________ line.

• straight

• zigzag

• curved

• oval

___________ objects are visible only when light from a luminous object falls on them.

Tags

NGSS.4-PS4-2

Shadows formed by the Sun are _____________ during the morning and evening hours.

• longest

• shortest

• medium size

• narrow

Tags

NGSS.5-ESS1-2

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.

Tags

NGSS.MS-PS4-2

The type of object shown here is:

• Opaque

• Transparent

• Translucent

• Luminous

Tags

NGSS.MS-PS4-2

Observe the picture. Which of the following conditions wiill be caused by this ?

• Sleep disturbance

• Damage to ear

• Happiness

• Proper sleep

Tags

NGSS.MS-PS4-2

Loud and unpleasant sounds are called _________