Oxford Primary Science - 3 Unit-1 Ourselves (Solved Exercise)

Oxford Primary Science - 3 Unit-1 Ourselves (Solved Exercise)

Part-1 Ourselves

Solved Excercise

A: Answer the following questions.
Q.1: Make a list of the way in which people protect their eyes.
Ans:  People protect their eyes by using glasses and routine checkups.

Q.2: What corrects the image of an object seen by the eye?
Ans: It is the brain's job to turn the image right side up.

Q.3: What two important functions do the ears perform?
Ans: Two important functions are hearing and balancing the body.

Q.4: Why it is dangerous to put any long, sharp object into the ear canal.?
Ans: It can damage the ear canal and eardrum.

Q.5: Do all things give off a smell?
Ans: Yes! all things give off a smell.
(Different animals have the different smelling ability)

Q.6: Why are there fine hairs in the nostrils?
Ans: To filter tiny things trying to enter through nostril.

Q.7: What happens to your sense of smell when you have a cold?
Ans: Sense of smell does not work properly when we have a cold.

Q.8: In what ways is the sense of smell useful?
Ans: Sense of smell is useful to recognize and memorize good or bad things.

Q.9: How to the taste buds help us enjoy foods?
Ans: The food that we eat touches the taste buds. The taste buds send messages to our brain which tells if food is sweet, salty, sour, bitter.

Q.10: Can you touch your nose with the tip of your tongue.
Ans: No.

Q.11: Is the top layer of the skin dead or alive?
Ans: The top layer of the skin is dead.

Q.12: What are the receptors? What Job do they do?
Ans: Our skin is made of several layers having thousands fo tiny blood vessels and nerves called receptors. Receptors give us information about things.

B: Select the correct Answer from the choice listed.
1. The taste buds help us to recognize.
     a) shapes            b) flavours            c) healthy food

2. The eyes lie in a socket in the 
     a) joints            b) nostrils            c) skull

3. Our _ _ _ _ _ _ get messages from our senses to tell us what we see, smell, taste, hear, or feel.
     a) heart            b) brain            c) stomach

4. The five senses are  _ _ _ _ _ _ _ _ _ _ _ _.
     a) sight, hearing, taste, touch, and smell.
     b) bones, muscles, brain, heart, and hands
     c) reading, maths, spelling, running, and writing

Text Reading Imagine a world that is dark and silent. What is we could not taste, what are eating, or feel warm or cool? We bring a flower to our nose, but cannot smell its perfume. It would be terrible.

Our five senses organs help us live. They are busy taking in information and sending it to our brain, without us even knowing. The sense organs help all living things See, Hear, Smell, Taste, and Feel.

Both people and other animals get to know about the world from their senses, and that is why our senses are so important. Let us see how each sense organ works.

The eyes lie in the sockets in the skull. They are shaped like a ball.

Our eyes are often thought to be the most important organ of sense. Everything we look at is seen, and then an image is sent to our brain for recording, much like a video recorder. This seems very simple, but the sense of sight is actually the most complex of the five sense.

How we see

Take a moment to look at an object around you sech as a table. Do you know how you are able to see it? What you know how you are able to see it? What you are actually seeing are rays of light that are hitting.