PH 2 Science

Below are sense organs, except . . . .

• eyes

• skin

• ears

• heart

It is inside the eyes. It causes the light entering the eye to be refracted and to fall on the retina. It is . . . .

• lens

• retina

• iris

• sclera

A person with . . . sees near objects clearly but distant objects appear blurred.

• hypermetropia

• myopia

• a colour-blindness

• blind

Our sense organ for detecting sounds is . . . .

• skin

• eyes

• ears

• tongue

First step of hearing sound is . . . .

• these messages are sent to the hearing centre in the brain

• sound vibrations move from the middle to the inner ear

• sound waves are collected in the outer ear and cause the eardrum to vibrate

• sound waves pass through the hammer into the middle ear

What is the function of skin?

• Allowing us to smell and breathe.

• Allowing light to enter the eye.

• Detecting sound.

• Regulates the body temperature.

The nose is an organ that is supported with . . . .

• scelera

• iris, lens, and retina

• bone and cartilage

• muscles

Taste-buds and taste-sensitive neurons are found on the . . . .

• eyes

• tongue

• skin

• ears

How to protect the nose health?

• Medicine should be used, only under a teenager's supervision.

• Don't put fingers in your nose or pluck nose hairs.

• Keep your nose clean with fingers inside.

• Inhale dangerous substances.

How to protect skin's health?

• Make sure you don't let others to touch you.

• Staying under the Sun longer than necessary.

• Make sure clothes are made from natural material.

• After using detergent, hands should be washed enough with enough amount of sand.