Light , Shadows and Reflections

which is opaque

• glass

• pepsi bottle

• steam

• skin on the tail of a fire fly

----------------- is a simple camera . [type in small letters]

Tiny gaps in the ------ is a form of natural pinhole cameras . [write a plural answer]

what is the principle of a pinhole camera

• light travels in a straight line

• light makes us see things

• because of light reflections are formed

• fire do not burns if there is no oxygen

--------------- gives some information of an opaque object .[type in small letters]

Ramu put his leg in the pool of water . Shibu could see his leg inside the water clearly . How

• water is opaque

• water is translucent

• water is transparent

Describe the image taken by a pinhole camera in one word .[the main thing]

• upsidedown

• colourful

• dim

• black

luminous objects produce light because of lustre

• true

• false

We are which is sphere in shape , and there are so many , we live in the space , we are very huge and hot , and also luminous. Who are we [write a plural answer]

we can see our reflection on a

• mirror

• rock

• wood

• rubber