World Book Trivia Quiz For Kids- 6/18-senses

When you look at an object, rays of light enter the front of your eye. Your eye changes these rays into electrical signals. The signals are then sent to your brain, which forms a picture in your mind. The picture in your mind tells you what you are looking at. In this way, the eye and the brain work together to help you see.

Ears also help animals and people keep their balance. When we move, the fluid in our inner ear moves. Nerves let the brain know what is going on. The brain then tells the muscles of the body the right way to move to keep the body steady.

Our internal senses tell us about changes that take place inside the body. They send messages about such changes to the brain. These senses tell us when we are hungry, thirsty, tired, or in pain. Our internal senses also react to changes in our muscles. When we move our head, arms, or legs, our internal senses keep track of what is happening inside the body at the same time.

Braille > is a code of small, raised dots that can be felt with the fingertips. It was developed as a way to help blind people read. Louis Braille, a blind French student, invented the system when he was 15 years old. Today, many signs in buses, elevators, and other public places are written in braille.

The skin is made up of three layers: the epidermis, the dermis, and the subcutaneous > tissue. The epidermis is the outermost layer. The dermis is the middle layer. The subcutaneous tissue is the innermost layer.

The scientific term for smell is olfaction, and the system by which we smell is known as the olfactory system.

The tongue muscles are covered by a soft, wet layer of skinlike material called a mucous membrane. The top of the tongue has round and cone-shaped bumps called papillae >. The papillae give the tongue its rough surface. Taste buds in the papillae help us tell the difference between sweet, sour, salty, and bitter tastes. They also give a pink color to the tongue.

Diseases are a leading cause of deafness. One such disease occurs in the middle ear. The ear fills up with fluid. The fluid causes the ear to stop working correctly. This infection occurs most often in small children. If it is not treated by a doctor right away, it can lead to deafness.

Certain parts of the body feel things better than other parts. The tip of the tongue and the tips of the fingers can feel even the lightest touch. They have many special areas called touch organs. Other parts of the body, such as the back of the shoulders, have few touch organs. They cannot feel touching very well.

Our sense of taste is affected by how a food smells. Some experts believe that when we eat some foods, we smell them more than we taste them. For example, we really smell coffee, cherries, and chocolate more than we taste them. If you were blindfolded and your nose was stuffed up, you would find it hard to tell cherries from chocolate by taste alone.