Home | | Science 6th Std | Student Activity

# Student Activity

6th Science : Term 1 Unit 2 : Forces and Motion : Student Activity

Activity 1

Can you identify whether it is push or pull that results in motion in the following cases?

When there is a change of position of an object with respect to time, then it is called motion, if it remains stationary it is called rest.

Event 1: The man in the boat is moving with respect to the bank of river. He is at rest with respect to the boat.

Event 2:

The girl on the swing is rest with respect to the seat of the swing.

She is with moving respect to the garden.

Event 3: Nisha is going to her grandmother's house by bicycle. The girl on the bicycle is moving with respect to the road.

She is rest with respect to the bicycle.

Activity 2

Moon or Cloud?

Observe the moon on a windy night with a fair bit of cloud cover in the sky. As a cloud passes in front of the moon you sometimes think it is the moon which is moving behind the cloud. What would you think if you were to observe a tree at the same time?

It is a common illusion, caused by a combination of a bright moon and thin, dim clouds (usually moving fast). Your eye/brain has trouble processing difference of distance, especially in the sky, and so perceives the dim clouds as being further away than the bright moon.

Activity 3

Activity 4

Play with pencil

(i). Shanthi took a pencil and sharpened it with a sharpener. (ii) Then she drew a circle using the pencil and a compass. (iii) Later she took her ruler (scale) and drew a straight line in another paper. (iv) Then she kept the pencil between her finger and moved it back and forth.

Now, look at the motion of the pencil in all these four cases. How was it?

i. In the first case, the pencil rotated in its axis.

ii. In the second case, it went in a circle.

iii. In the third case, the pencil travelled in a straight line.

iv. Fourth case, the pencil tip moved back and forth, that is it oscillated like a swing.

Activity 6

Classify the following according to the path it takes.

Linear ,Curvilinear, Circular,Rotatory,Oscillatory, Zigzag (irregular)

* A sprinter running a 100 m race

* A coconut falling from a tree

* striking a coin in a carom board game

* Motion of flies and mosquitoes

* Beating of heart

* Children playing in a swing

* The tip of hands of a clock

* Flapping of elephant’s ears

* A stone thrown into the air at an angle

* Movement of people in a bazaar

* Athlete running around a track

* Revolution of the moon around the earth

* The movement of a ball kicked in a football match

* Motion of a spinning top

* Revolution of the earth around the sun

* Swinging of a pendulum

* Children skidding on a sliding board

* Skidding down a playground slide

* Wagging tail of a dog

* Flapping of a flag in wind

* A car driving around a curve

* Woodcutter cutting with a saw

* Motion of water wave

* Motion of piston inside a syringe

* Bouncing ball

[add five motions you observe to this list

A sprinter running a 100 m race - Linear motion

A coconut falling from a tree - Linear-motion

Striking a coin in a carom board game - Linear motion

Motion of flies and mosquitoes - Zigzag (irregular) motion

Beating of heart - Oscillatory motion

Children playing in a swing - Oscillatory motion

The tip of hands of a clock - Circular motion

Flapping of elephant's ears - Oscillatory motion

A stone thrown into the air at an angle - Curvilinear motion

Movement of people in a bazaar - Zigzag (irregular) motion

Athlete running around a track - Circular motion

Revolution of the moon around the earth - Rotatory motion

The movement of a ball kicked in a football match - Curvilinear motion

Motion of a spinning top - Circular motion

Revolution of the earth around the sun - Rotatory motion

Swinging of a pendulum - Oscillatory motion

Children skidding on a sliding board - Linear motion

Skidding down a playground slide - Linear motion

Wagging tail of a dog - Oscillatory motion

Flapping of a flag in wind - Oscillatory motion

A car driving around a curve - Curvilinear motion

Woodcutter cutting with a saw - Linear motion

Motion of water wave - Linear motion

Motion of piston inside a syringe - Linear motion

Bouncing ball - Linear motion

Swirling stone tied to the rope - Circular motion

Person walking on a straight path - Linear motion

Throw paper aeroplanes at an angle - Curvilinear motion

Moving in a circle - Circular motion

Throwing ball - Curvilinear motion

How do we say? Let us calculate how long they travelled in One Hour?

Distance travelled by the Car in One Hour = 80 Km (160/2)

Distance travelled by the Bus in One Hour = 50 Km (200/4)

Distance travelled by the Truck in One Hour = 60 Km (300/5)

Have you found out? say now.

Fastest Car, Slowest Bus.

Have you noticed that saying who is fast and slow? is easy when we calculate the distance they travelled in one hour.

Yes, it is easy when we calculate the distance they travelled in one hour.

Let us  Calculate

1. A cat travelled 150 metres in 10 seconds, what is its average speed?

Solution:

Average speed (s) = distance travelled (d) / time taken (t)

= 150 metre/ 10 second

= 15 metre / second

2. Priya ride her bicycle 40 km in two hours. what is her average speed?

Solution:

Average speed (s) = distance travelled (d) / time taken (t)

= 40 km / 2 hour

= 20 km / hour

Our Speed...

Let us play a small game. Go to the playground with your friends. Mark 100 metre distance for a race. Conduct a friendly running race and calculate the time they taken to complete the distance by stopwatch. Now fill up the following table.

Compute the following Numerical Problems.

1. If you travel 10 kilometres in 2 hours, your speed is 5 km km per hour.

2. If you travel 15 kilometres in 1/2 hour, you would travel 30 km km in one hour, and your speed is 30 km. km per hour.

3. If you run fast at 20 kilometres per hour for 2 hours, you will cover 40 Km

Multiple Motion in a Sewing Machine

* Motion of the needle linear motion

* Motion of the wheel circular motion

* Motion of footrest oscillatory motion

Activity 7

Simple Spinner

Let us enjoy by making a simple spinner. Make it by the following instruction.

Cut a 2cm long piece from an old ball-pen refill and make a hole in its center with a divider point (Fig 1).

Take a thin wire of length 9cm and fold it into a U-shape (Fig 2).

Weave the refill spinner in the U-shaped wire (Fig 3).

Wrap the two ends of the wire on the plastic refill, leaving enough clearance for the spinner to rotate (Fig 4).

On blowing through the refill, the spinner rotates (Fig 5).

For obtaining maximum speed adjust the wires so that air is directed towards the ends of the spinner.

Have you enjoyed with simple spinner. Do you observe the motions in the toy. Can you answer the following question?

1. Motion of the air in tube is linear motion.

2. Motion of the refill stick rotatory motion.

3. The toy converts linear motion into rotatory motion.

Tags : Forces and Motion | Term 1 Unit 2 | 6th Science , 6th Science : Term 1 Unit 2 : Forces and Motion
Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail
6th Science : Term 1 Unit 2 : Forces and Motion : Student Activity | Forces and Motion | Term 1 Unit 2 | 6th Science