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

Hold your hand in front of your nose or keep hand on your chest, what you feel ?

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?

Either speak a little loudly or sing a song or produce humming sound like a bee and put your fingers on your throat. Do you feel some vibrations?

Switch off the light in your room at night for some time and then turn it on again : What did you feel when it was turned on again ?

Answer the following questions: place a clock near the end of the tubes and try to hear the ticking of the clock at the end of the other tube by placing your ear there. what do you observe?

Answer the following questions: Take a large shining metal spoon. Bring the deeper(i.e., concave) surface closer to your face. Can you see your image? Now take the spoon away from your face. What change do you observe in the image? Now repeat the activity by turning the convex surface of the spoon to the front. What changes do you notice in the image?