Tag: Samacheer Kalvi 3rd Standard Science Guide Term 1 Chapter 3

Samacheer Kalvi 3rd Standard Science Book Solutions Term 1 Chapter 3 Force

I. Fill in the blanks with suitable words:
(Push, force, pull, speed, gravitational force, direction, Muscular)

Question 1.
A __________ is needed to make a stationary object move.
Answer:
Force

Question 2.
The force applied with the help of muscle is called _________ force.
Answer:
muscular

Question 3.
__________ and __________ are known as forces.
Answer:
Push and pull

Question 4.
The reason for the fruits to fall from the tree is ________.
Answer:
gravitational force

Question 5.
Force changes the _________ and ________.
Answer:
speed and direction

II. Match the words with their pictures:

Answer:

III. Answer the following questions:

Question 1.
How do you open the door?
Answer:
I open the door by pushing or pulling.

Question 2.
Name the types of force.
Answer:
i) There are two types of forces.

1. Contact force
2. Non-contact force.

ii) Contact force is classified into three

1. Muscular force
2. Mechanical force
3. Frictional force

iii) Non-Contact force is classified into two.

1. Gravitational force
2. Magnetic force.

Question 3.
Which force is involved in collecting water from well?
Answer:
Muscular force is involved in collecting water from well.

Question 4.
What is push?
Answer:
When a force is applied in the direction of an object, it is called push.

Question 5.
What kind of force is used to make clay pot?
Answer:
Muscular force is used to make clay pot.

IV. Sujatha places a magnet near some objects. What are the objects that will be attracted from the list given below?
(note, pin, coin, rubber, shirt, comb, steel tumbler, nail)
Answer:
pin, coin, steel tumbler, nail.

V. Think and answer:
Raja throws a ball, a stone, a paper, and a leaf up in the air? What kind of force is involved here? What will happen to them?
Answer:
i) Gravitational force is involved here.
ii) So the ball, the stone, the paper, and the leaf will fall down. The earth pulls all the objects towards itself.

Intext Activity:

Let us look at the pictures below to understand movement and action better (Text Book Page No. 114):

In the above pictures.

Question 1.
What moves? _______, ________
Answer:
The ball, The cycle.

Question 2.
What is the action? _______, ________
Answer:
Hitting the ball, Riding the bicycle.

Put a tick (✓) mark for the pictures of motion (Text Book Page No. 116):

Answer:

Classify the following – Push or Pull (Text Book Page No. 116):

Answer:

S.No	Activities	Push / Pull
1	Riding the bicycle	Push
2	Moving the table towards you	Pull
3	Dragging the chair	Pull
4	Moving a car to start	Push
5	Opening the window	Push
6	Stretching the rubber band	Pull
7	Removing the shoe laces	Pull

Match the following (Text Book Page No. 118):

Answer:

Observe the picture and write the kind of force involved here (Text Book Page No. 120):

Question 1.

Answer:
Muscular force

Question 2.

Answer:
Mechanical force

Question 3.

Answer:
Gravitational force

Question 4.

Answer:
Magnetic force

Tick (✓) the muscular force (Text Book Page No. 120):

Answer:

Think (Text Book Page No. 121):

Question 1.
Why do we sprinkle the powder on the carrom board before playing carrom?
Answer:
We sprinkle the powder on the carrom board to make the surface of the board smooth. This reduces the friction between the surface of the carrom board, the striker, and the coins. As a result, the coins and the striker can move easily on the carrom board.

Classify (Text Book Page No. 121):

Answer:

List out the push activities	List out the pull activity	List the frictions here
Swing	Pulling wood	Sliding
Playing foot ball	Pulling trolley	Playing in sand
Kids scooter, cycling	Kiting	See saw

3rd Standard Science Guide Force Additional Questions and Answers

I. Choose the correct answer:

Question 1.
________ is the motion which gives the required result.
(a) Action
(b) Direction
(c) Shape
Answer:
(a) Action

Question 2.
________ involves an interaction between two or more objects.
(a) Matter
(b) Force
(c) Action
Answer:
(b) Force

Question 3.
When a force is applied without touching an object, it is called force.
(a) contact
(b) mechanical
(c) non-contact
Answer:
(c) non-contact

II. Fill in the blanks:

Question 1.
Change in position of an object is called _________.
Ahs :
movement

Question 2.
_________ is required in pulling than in pushing.
Answer:
Less force

Question 3.
The force applied by using the parts of our body is called _________ force.
Answer:
muscular

Question 4.
_________ is a force actions between two surfaces in contact.
Answer:
Friction

III. Write True or False:

Question 1.
Force can lift or drop an object.
Answer:
True

Question 2.
The force applied by a machine is called magnetic force.
Answer:
False

Question 3.
The force between two stones created a spark is called frictional force.
Answer:
True

Question 4.
Muscular force is a non-contact force.
Answer:
False

IV. Answer in a word or two:

Question 1.
Define Motion.
Answer:
When an object or a thing moves from one place to another, it is said to be in motion.

Question 2.
What is force?
Answer:
Force is a push or a pull on an object which makes it move, changes its shape, or stops it from moving.

Question 3.
What is pull?
Answer:
When a force is applied in the direction opposite to the direction of an object, it is called pull.

Samacheer Kalvi 3rd Standard Science Guide