Light a candle and stand it upright. Hold your hands on its two sides at some distance from the candle. Bring them closer. :
What do you feel?

Light a candle and stand it upright. Hold your hands on its two sides at home distance from the candle. Bring them closer. : Have you warmed yourself near a bonfire or in the morning sun in winter?

Rub your palms against each other and put them on your cheeks. What do you feel?

Suppose you are standing on a tall ladder. If your distance from the centre of the earth is 2 R, what will be your weight ?

Apparatus: Bars of stainless steel, aluminium and copper, a candle, a burner, pins, etc. : Procedure: Take stainless steel (or iron), copper and aluminium bars, each about 30 cm long and having the same shape. Apply wax spots with the help of candle at a distance of 2 cm from each other on all the three bars. Stick a pin in each of these spots so that it is upright. Now insert the ends of all three bars into a flame at the same time. for a while. What do you see? From which bar do the pins start falling first? Why?

Take three similar vessels . Let us call them A,B and C ( see figure below ) Fill A with hot water and B with cold water . Put some water from A and B in C . Dip you right hand in A and left hand in B , and keep them immersed for 2 to 3 minutes . Now dip both the hands in C .: What do you feel ?:

Take a small stone . Hold it in your hand. What are the forces acting on the stone? Now release the stone . What do you observe? What are the forces acting on the stone after you release it ?

Take a small stone. Hold it in your hand. What are the forces acting on the stone ? Now release the stone. What do you observe ? What are the forces acting on the stone after you release it ?