Force and Pressure – 4

Give two examples of situations in which applied force causes a change in the shape of an object. What is the first statement of this audio clip?

• The shape of dough changes on pressing with rolling pin to make chapatis.

• The shape of a toothpaste tube changes when we squeeze it.

Give two examples of situations in which applied force causes a change in the shape of an object. What is the second statement of this audio clip?

• The shape of dough changes on pressing with rolling pin to make chapatis.

• The shape of a toothpaste tube changes when we squeeze it.

What are the various effects of force? What is the first statement of this audio clip?

• It may make an object move from rest.

• It may change the speed of an object if it is moving.

• It may change the direction of motion of an object.

• It may bring about a change in the shape of an object.

What are the various effects of force? What is the second statement of this audio clip?

• It may make an object move from rest.

• It may change the speed of an object if it is moving.

• It may change the direction of motion of an object.

• It may bring about a change in the shape of an object.

What are the various effects of force? What is the third statement of this audio clip?

• It may make an object move from rest.

• It may change the speed of an object if it is moving.

• It may change the direction of motion of an object.

• It may bring about a change in the shape of an object.

What are the various effects of force? What is the fourth statement of this audio clip?

• It may make an object move from rest.

• It may change the speed of an object if it is moving.

• It may change the direction of motion of an object.

• It may bring about a change in the shape of an object.

Why a fountain of water is created at the leaking joints or holes of pipes of the main water supply line? What is the first statement of this audio clip?

• Many times we see a fountain of water rushing out of the leaking joints (or holes) in the pipes of main water supply line.

• It is due to the very high pressure exerted by water on the sides (or walls) of the pipes that such a fountain of water is formed.

Why a fountain of water is created at the leaking joints or holes of pipes of the main water supply line? What is the second statement of this audio clip?

• Many times we see a fountain of water rushing out of the leaking joints (or holes) in the pipes of main water supply line.

• It is due to the very high pressure exerted by water on the sides (or walls) of the pipes that such a fountain of water is formed.

Why does the liquid rise in a syringe when its piston is pulled up? or

How does a liquid medicine enter a syringe?

What is the first statement of this audio clip?

• When the nozzle of a syringe is dipped in a liquid and its piston is withdrawn, the pressure inside the syringe is lowered.

• The greater atmospheric pressure acting on the surface of the liquid pushes the liquid up into the syringe.

Why does the liquid rise in a syringe when its piston is pulled up? or

How does a liquid medicine enter a syringe?

What is the second statement of this audio clip?

• When the nozzle of a syringe is dipped in a liquid and its piston is withdrawn, the pressure inside the syringe is lowered.

• The greater atmospheric pressure acting on the surface of the liquid pushes the liquid up into the syringe.