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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

InText Activity:

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

Question 1.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 1

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 2

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Complete the Worksheet:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 3 Germs

Question 1.
Do germs make people sick?

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 4

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 5

Question 2.
Can you see germs?

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 4

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 6

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Question 1.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 7

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 8

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 9

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 10

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Question 1.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 11

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 12

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

Match (Text Book Page No. 99):

Question 1.

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 13

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 14

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 15

Answer:

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body 16

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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

Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 1 My Body

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