Category: Basic Science

This is a force with which the earth attracts objects towards its centre. If you throw a coin up, what do you expect? You will notice that the coin will go up and at a certain point stop before beginning to come down. Is there anything pulling the coin down? Yes, although you may not see anything pulling it. The force due to gravity is pulling the coin to the centre of the earth. Assuming you are holding a mass of 20g in your hand climbing a tree or a high object. Release the mass, what do you notice? You will notice that the weight did not go horizontally but vertically....

In everyday language, force suggests the use of compulsion or strength. If your parents forced you to wash your school dress after school on a Wednesday, it means that they compelled you to do it. Concept of Force A force is a thing that 1. Changes the shape of a body; 2. Makes a body at rest move; 3. Changes the speed of a moving body; 4. Causes a moving body to change direction; 5. Causes a moving body to stop. Altogether, force is defined as that which changes the shape, speed or direction of a moving body....

What is Pregnancy? Pregnancy is the result of the fertilization of the female ovum or egg by the male cell or sperm. Pregnancy is also the period from conception to birth. After the egg is fertilized bya sperm and then implanted in the lining of the uterus, it develops into the placenta and embryo, and later into a foetus. Pregnancy usually lasts 40 weeks, beginning from the first day of the woman’s last menstrual period, and is divided into three trimesters, each lasting three months. Pregnancy is that state or condition when a female carries a foetus in her womb for about nine months....

What is Menstruation? Menstruation is the monthly flow of blood from the womb, through the vagina in every woman of childbearing age. This period is called Menstrual Period. It takes place after about every 25-30 days. The number of days before the next period is called ‘Menstrual Cycle’. The menstrual period is different from one person to another. Menstrual Hygiene As the body sends out blood, it also sends out body odour. It should be noted that during the menstrual period, there is a high risk of infection....