light and sound

Light travels in a line.

• straight

• slanting

• curved

Sound travels as waves.

• invisibe

• visible

• shock

• liquid

sounds can make us feel calm and cheerful .

• pleasant

• peaceful

What are luminous objects?

• objects that can produce only artificial source of light is called luminous objects

• pleasant and non - peasant sounds

• objects that can produce light is called luminous objects.

• objects that can produce sound is called luminous objects.

During a thunderstorm we can see _________before we can hear thunder

• water

• rain

• lightning

• light

Sound is a form of .

• energy

• force

• shock waves

• liquid

Sound travels through .

• air,solids and liquids

• water ,air and gas

• air,water and solids

• air, liquid and water

When light falls on a non- luminous objects it can be , ,

• transmitted,sound,shadow

• absorbed,polluted,reflected

• transmitted ,absorbed or refected

• transmitted, absorbed, reflected

A sundial is that tells time

• sun

• light

• instrument

• sound

During a thunderstorm we can see lightning before we can hear thunder. Give reason?

• light travels faster than sound .

• thunder travels faster than sound

• sound travels faster than lightning.

• sound travels faster than light.