EVERYDAY SCIENCE

Detailed explanation-1: -Condoms are also known as “barrier” methods of birth control; they physically block or otherwise prevent sperm from entering the uterus and reaching the egg for fertilization. The diaphragm, cervical cap, and sponge are used along with spermicide (a chemical substance that destroys sperm) to prevent pregnancy.

Detailed explanation-2: -How a condom works. Condoms are a “barrier” method of contraception. They are made of very thin latex (rubber), polyurethane or polyisoprene and are designed to prevent pregnancy by stopping sperm from meeting an egg. They can also protect against STIs if used correctly during vaginal, anal and oral sex.

Detailed explanation-3: -Barrier methods of birth control prevent pregnancy by blocking sperm. This stops the sperm from reaching an egg. Types of barrier methods include condoms, diaphragms, cervical caps, and the contraceptive sponge.

Detailed explanation-4: -How female condoms work. Female condoms are a barrier method of contraception worn inside the vagina. They prevent pregnancy by stopping sperm meeting an egg.

Detailed explanation-5: -They are available as vaginal foams, creams, gels, and suppositories and are placed in the vagina before a couple has sexual intercourse. These contraceptives provide a chemical barrier to sperm by trapping and damaging sperm. Thus, they prevent sperm from fertilizing an egg.