LOOKING AROUND ENVIRONMENTAL STUDIES [4 marks Question-Answer]

We can find the material used in spoon in the following manner
→ Rigid and hard- Metals are very hard because they cannot change its shape.
→ Shine -Metals have a shiny surface.
→ Sound -Whenever we hit the metal to any surface, it creates a sound.
→ Spoon has all the three features given above, thus, we can say that spoon is made up of metal.

Objects	Materials	Reasons
Umbrella	Paper	Paper will tear if it gets wet in the rain.
Bedsheets	Aluminum	It will tear if we sit on it.
Balloon	Glass	Air cannot be blown inside it.
Table	Fabric	It will fall if we keep any object on it.
Bottle Opener	Rubber	Rubber opener will not be able to open a bottle.

 

The complete list for Khushi's classroom materials is given below in the table.

Khushi's list	Name of the material	Objects made of this material which are in your classroom or
Table, chair, door	Wood	For example, Pencil
Door, hinges, nails	Metal	Knife
Window panes, light bulb	Glass	Magnifying glass, spectacles
Electric switches	Plastic	Geometry box, water bottle
Eraser	Rubber	Water bottle covers

1. Yes, the colour of the paper appears to change.
2. Yes, the white paper appears blue when we look it through a blue plastic or glass. Similarly, it will appear yellow if we look at it through the yellow plastic or glass.
3. Yes, the colours of different objects appear to change when they are looked through another colour object.The blue object will appear black if we look it through yellow plastic.
4. Yes, I have experienced looking through coloured transparent objects earlier also. When we play Holi, we look each other through water filled balloons.