Materials Around Us Class 6 Short Question Answer

Materials Around Us Class 6 Short Question Answer

Materials Around Us Class 6 Short Question Answer

Question 1.

Chalk, iron nail, wood, aluminium, candle, cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Answer:

On the basis of some properties like — lustre, hardness, softness, roughness or smoothness.

Question 2.

Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?

Answer:

Dissolved oxygen is available for animal and plants for respiration and survival.

Question 3.

Differentiate between soft and hard materials.

Answer:

Materials which can be compressed or scratched easily are called soft while some other materials which are difficult to compress are called hard. For example, cotton or sponge is soft but iron is hard.

Question 4.

Define matter and give four examples.

Answer:

Anything that occupies space and has mass is called matter. For example, cloth, pen, water and air.

Question 5.

What kind of materials are said to be opaque ? Give one example.

Answer:

Those materials which do not allow to see through it are called opaque. For example, wood.

Question 6.

What is the difference between a metal and a non-metal ?

Answer:

Metals are ductile, malleable and a good conductors of electricity, while non-metals are brittle, non-malleable and a poor conductors of electricity.