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Samacheer Kalvi 3rd Standard Science Book Solutions Term 1 Chapter 1 My Body

I. Fill in the blanks.

Question 1.
We should wash our hands _______ playing out. (before/after)
Answer:
after

Question 2.
Intestinal worms cause ________(anaemia/cold)
Answer:
anaemia

Question 3.
Eating ________ is good for health, (fruits/ packed snacks)
Answer:
fruits

Question 4.
_______ improves our brain functions, (eating junk food/doing exercises)
Answer:
Doing exercises

Question 5.
If someone’s touch hurts you, then it is a _______(good touch/bad touch)
Answer:
bad touch

Question 6.
_________ is the word used to refer to the disabled persons, (handicapped/
differently-abled)
Answer:
Differently-abled

II. Say ’TRUE’ or’FALSE’.

Question 1.
Use soap to wash your hands.
Answer:
True

Question 2.
Open defecation causes cholera
Answer:
True

Question 3.
Bathing reduces blood circulation.
Answer:
False

Question 4.
Show pity on physically, challenged people.
Answer:
False

Question 5.
Always use ear buds to clean your ears.
Answer:
False

III. Answer the following questions in a few words.

Question 1.
What are the effects of open defecation?
Answer:
Effects of open defecation are :

• Waterborne diseases.
• Diseases caused by insect carrier.
• Pollution.

Question 2.
Write the benefits of bathing.
Answer:
Benefits of bathing are:

• Cleanses the body.
• Removes dirt and odour.
• Protects from infection.
• Improves blood circulation.

Question 3.
List out the types of touches.
Answer:
The two types of touches are good touch and bad touch.

Question 4.
Who are the persons in your safe circle?
Answer:
The persons in my safe circle are father, mother, grandpa, grandma, brother, sister and teacher.

Question 5.
Name the sensory organs of our body.
Answer:
The sensory organs of our body are eyes, nose, ears, tongue and skin.

IV. Arrange in correct order. (First and last steps are in correct sequence)

Question 1.
Wet your hands and apply enough soap.
Answer:
1

Question 2.
Rub the tips of your finger.
Answer:
6

Question 3.
Rub both hands by interlocking your fingers.
Answer:
4

Question 4.
Rub the back of each hand.
Answer:
3

Question 5.
Rub the palm together.
Answer:
2

Question 6.
Rub the back of each fingers.
Answer:
5

Question 7.
Rub the thumb and end of your wrist and rinse both hand with water.
Answer:
7

V. Answer the following questions.

Question 1.
When do we wash our hands?
Answer:
We should wash our hands

• Before and after eating.
• After using the toilet.
• After playing outside.
• After touching an animal.

Question 2.
What will you do when somebody who are not in your ‘safe circle* touches you?
Answer:

• I will shout “Don’t touch”.
• I will leave the place immediately.
• I will ask help from my parent or from my teacher.

Question 3.
How can we protect our skin?
Answer:

• Always use a mild soap.
• Keep your skin dry and clean.
• Dry your skin by rubbing gently with a clean cloth.
• Consult a doctor when you feel any itching, skin, injury or infection.

Question 4.
How do we get intestinal worms?
Answer:
We get intestinal worms by
i) Not washing hands after using toilets,
ii) Using open defecation.

Question 5.
How do you help differently-abled people?
Answer:
I will help the differently-abled people by

• Bring them to cross the road,
• Making way for them.
• Opening doors for the disabled,
• Treatthemasnormal people.

VI. Project work.

Question 1.
Collect proverbs related to self-hygiene, health and sanitation.
Answer:
Self-hygiene proverbs :

• A healthy man is a successf ul man
• A broken hand works, but not a broken heart.
• Hygiene is two thirds of health

Health proverbs:

• Work is half of health
• A healthy soul cannot live in a dry body
• Health is better than wealth.

Sanitation proverbs:

• Cleanliness is next to godliness
• Cleanliness is a state of purity, clarity, and precision
• Cleanliness and good sanitation in schools is a matter of high importance

InText Activity:

Tick(✓) the items used for personal hygiene (Text Book Page No. 86):

Question 1.

Answer:

Let us Write (Text Book Page No. 89):

Complete the Worksheet:

Germs

Question 1.
Do germs make people sick?

Answer:

Question 2.
Can you see germs?

Answer:

Question 3.
Where are the germs found?
Answer:

1. Germs are found in air and water.
2. Germs are found in our hands, nails and in the ridges.

Question 4.
What can I do to avoid the spreading of germs?
Answer:

1. We should wash our hands properly.
2. When we cough or sneeze, we should use handkerchief.

Think Zone (Text Book Page No. 89):

Question 1.
Preethi often bites her nails. Is it a good habit? Give reason.
Answer:
No, it is not a good habit.
Because germs are found under the nails, in the ridges.

Think and Discuss (Text Book Page No. 89):

Question 1.
Arun usually eats food or snacks without washing hands properly. Is it correct? Give reason.
Answer:
No, It is not correct. Because germs are found in dirty hands.

Put a tick (✓) for correct action and cross (✗) for the wrong action (Text Book Page No. 91):

Question 1.

Answer:

Let us Answer (Text Book Page No. 92):

Read the statements given below. Identify whether it is Right (✓) or Wrong (✗) and put the suitable symbol.

Answer:

Let us find (Text Book Page No. 92):

Question 1.

Answer:

Think Zone (Text Book Page No. 93):

Question 1.
Anu plays with her baby brother. As he cries, she gives him a pencil. On seeing this, Anu’s mom was shocked. She quickly takes the pencil back. Do you know why?
Answer:
The pencil has a sharp end. It may hurt the baby’s eye or ear.

Let us do (Text Book Page No. 95):

Read the given statements carefully. Write ‘T’ if it is True and ‘F’ if it is False.

Question 1.
Avoid playing video games or watching TV for a long time.
Answer:
T

Question 2.
Avoid loud noise.
Answer:
T

Question 3.
Do not clean your nose by inserting any object into it.
Answer:
T

Question 4.
A dirty tongue may cause disease and bad breath.
Answer:
T

Question 5.
Dry your skin by rubbing gently with a dirty cloth.
Answer:
F

Let us discuss (Text Book Page No. 98):

Question 1.
You are playing in the park. Someone gives you eatable things/toys. What will you, do?
Answer:
I won’t buy any things.

Question 2.
If someone touches you, you feel uncomfortable. What will you do immediately? To whom you will inform this?
Answer:

• I will leave that place immediately.
• I will inform to my parents or teachers.

Match (Text Book Page No. 99):

Question 1.

Answer:

Find and circle the words related to fitness (Text Book Page No. 101):
(SLEEP, ENERGY, HEALTHY, RUN, JUMP, PLAY, YOGA)

Answer:

3rd Standard Science Guide My Body Additional Questions and Answers

Choose the correct answer:

Question 1.
National De-worming day is observed on ________.
(a) April 7
(b) February 10
(c) October 15
Ans :
(b) February 1

Question 2.
Noise levels are measured in ________.
(a) decibels
(b) m/s²
(c) kg
Answer:
(a) decibels

Question 3.
_______ is a reading and writing method for visually challenged person.
(a) Abacus
(b) Braille
(c) Teaching
Answer:
(b) Braille

II. Match the following:

1. Global Hand Washing Day	a. February 10
2. National De-worming Day	b. April 7
3. World Health Day	c. November 19
4. World Toilet Day	d. October 15

Answer:

1. Global Hand Washing Day	a. October 15
2. National De-worming Day	b. February 10
3. World Health Day	c. April 7
4. World Toilet Day	d. November 19

III. Write True or False:

Question 1.
Do not clean your nose by inserting any object into it.
Answer:
True

Question 2.
Do not pick your nose.
Answer:
True

Question 3.
Rub your eyes with your fist.
Answer:
False

Samacheer Kalvi 3rd Standard Science Guide