On a winter night, you feel warmer when clouds cover the sky than when the sky is clear. Explain.

A bird is in a wire cage hanging from a spring balance.Is the reading indicated on the balance,when the bird is flying out in the cage greater than ,less than or the same as that when the bird is sitting in the cage ?Explain.

When you touch a metal object like a door handle on a dry winter day, you are likely to see a spark and feel a definite shock. We usually explain this by saying that we have built up a static charge. Why does this not happen on a hmid day in the summer?

Explain, why a cloudy night is more warmer than a clear night is more warmer than a clear night.

It is said that you move the sky when you move figer,how?

When a ammeter is put in a circuit, does it read slightly less or more than the actual current in the original circuit? Explain.

Nicotiana tabacum, a Short Day Plant, when exposed to more than critical period of light fails to flower. Explain.

When a voltemeter is put across a part of the circuit, does it read slightly less or more than the original voltage drop across the part? Explain.