What activities will you do to find relation between heart beat and pulse rate?

Do you find any relation between sunrise and seasons?

What is the relationship between the heart beat and the pulse?

Do you find any relation between pH and hardness of water?

Do you find any relation between smoothness and time to dry?

Make a paper tube 10 inch long and one inch in diameter. Keep once end of it on the chest of your friend on a pointer one inch to the lift side centre around 6 inches below from his/her neck. Keep your ear at the other end. Listen carefully and count the heart beats for a minute. What is the relationship between the heart beat and the pulse.

What is the reason for the heart beat?

What activity do you do explain transpiration in plants?

Is there any relation between weight of the body and heart beat rate ?

What does the pulse rate show?