Question

1. What do we need Inorder to see a shadow
2. What are conductors and insulator . Give example.
3. What is the correct method to keep two bar magnets together.
4. Why is water important for us.
5. Write three properties of air.

I want these answers​

Answer 1

1. The three things to form a shadow are:

• A source of light.
• An opaque object to block the light.
• A surface behind the object to make the light fall on it.

2. Examples of conductors include metals, aqueous solutions of salts (i.e., ionic compounds dissolved in water), graphite, and the human body. Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air

3. While storing bar magnets, they should be kept in pairs with their unlike poles on the same side. They must be separated by a piece of wood while two pieces of soft iron should be placed across their ends

4. Water carries nutrients to all cells in our body and oxygen to our brain. Water allows the body to absorb and assimilate minerals, vitamins, amino acids, glucose and other substances. Water flushes out toxins and waste. Water helps to regulate body temperature.

5. Proparties of air

• Air takes up space.
• Air has mass.
• Air is affected by heat.

Hope it helps :)

Answer 2

Answer:

1.The three things to form a shadow are: I)A source of light. II)An opaque object to block the light. III)A surface behind the object to make the light fall on it.

2.Examples of conductors include metals, aqueous solutions of salts (i.e., ionic compounds dissolved in water), graphite, and the human body. Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air.

3.While storing bar magnets, they should be kept in pairs with their unlike poles on the same side. They must be separated by a piece of wood while two pieces of soft iron should be placed across their ends.

4.Water carries nutrients to all cells in our body and oxygen to our brain. Water allows the body to absorb and assimilate minerals, vitamins, amino acids, glucose and other substances. Water flushes out toxins and waste. Water helps to regulate body temperature.

5. The properties of air are:

Air takes up space.

Air has mass.

Air is affected by heat.

Air exerts pressure.

Air can be compressed.

Air is affected by altitude.