Why do you wait for periods of music, P.T., drawing in the classroom?

Why do you get hungry after physical exercise ?

Why do you think the amount of DDT is maximum in birds?

Answer the following . Time period of a particle in S.H.M. depends on the force constant k and mass m of the particle : T = 2 (pi) (( sqrt m /k)). A simple pendulum executes SHM approximately . Why then is the time period of a pendulum independent of the mass of the pendulum ?

Why do you think the zygote is dormant for sometime in a fertilized ovule?

A man jogs 10 kms daily. However one day he experiences cramping in the muscles of his left leg'. Why do you think this occurred?

Take a piece of thin aluminium sheet and dip it in water in a bucket . What do you observe ? Now shape the same piece of aluminium into a small boat and place it on the surface of water . It floats , isn't it ?

What will you do if you are spending more time in internet /mobile games, phone, etc. ? Why ?

While experimentation, why do you think it is difficult to assign any effect seen to any single hormone?