Question

1. Write two ways in increase friction.

2. Give two examples for contact force.

3. Write one difference between balanced force and unbalanced force.

4. __________ , __________ are examples of cereal crop

5. __________ , ________ are two traditional methods of irrigation.

6. _______ is an example of perishable food material.

7. Which non- metal is used in medical industry to preserve human tissues and

organs?

8. _________ is a non-metal used in the vulcanization of rubber:

9. When exposed to air, copper objects turn green due to the formation of

10. ______ is an alloy used in the construction of airplane and other vehicles.



answer this​

Answer 1

Explanation:

May it will help you

And don't forget me to mark as brillianist

Answer 2

Answer:

1.making the surfaces rough ,increase the mass of the object that is moving

2. Pushing a car up a hill , kicking a ball across a room

3. Balanced force : Equal in magnitude Unbalanced force :Unequal in magnitude

4. Wheat , Maize

5. Pulley system, Furrow irrigation

6. Fresh meat

7. Nitrogen

8. Sulphur

9. Copper carbonate

10. Duralumin