6th Std Science 9 Motion and Types of Motion l Question and Answer l

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Science Studies -  6th Standard

9. Motion and Types of Motion

Question And Answer

1. Identify the types of motion.

(a) Movement of the earth around the sun : Circular motion

(b) Movement of a ceiling fan : Circular motion

(c) A meteor falling from the sky : Linear motion

(d) A rocket launched from the ground : Linear motion

(e) A fish swimming in water : Random motion

(f) The plucked string of a sitar : Oscillatory motion

2. Fill in the blanks.

(a) If a ball is released from the terrace of a building, it comes down in uniform linear motion. On the other hand, it reaches the ground in random motion if it is thrown with force away from the terrace in a direction parallel to the terrace.

(b) The motion of an aeroplane on the runway before takeoff is linear.

(c) The kite looking for its prey flies with circular motion in the sky.

(d) Children sitting in a rotating giant wheel have uniform circular motion, while those sitting in a merry-go-round have a non-uniform circular motion.

(Linear, non-linear, circular, uniform linear, non-uniform linear, uniform circular, non-uniform circular, random)

3. How are we different ?

(a) Oscillatory motion and linear motion.

Ans:

(b) Linear motion and random motion.

Ans:

(c) Random motion and oscillatory motion.

Ans:

4. Explain in your own words, giving one example each.

(a) Linear motion

Ans: Object travel in a straight line or in the same direction. 

Ex. Moving vehicle

(b) Oscillatory motion

Ans: The swing always come back from one end to the other end. It takes about the same time for sewing to move back and forth. In this motion object come back to original position.

Ex. Ceiling fan

(c) Circular motion

Ans: The motion of an object along a circular path is called Circular motion.

Ex. Electrons moving in a magnetic field

(d) Random motion

Ans: There is no definite direction for this motion. In this motion object does not come back to original position.

Ex. Flying birds

(e) Periodic motion

Ans: The motion in which the moving object passes through a certain point again and again after fixed period is called Periodic motion.

Ex. clock

5 Answer the following questions in your own words.

(a) Which types of motion are seen in birds flying in the sky ?

Ans: Random motion

(b) Write in detail about your experience of various types of motion while riding a bicycle on a road.

Ans: Linear motion, Circular motion, Random motion

6. Complete the puzzle using words for types of motion :

(1) a spring is stretched and one end is released

Ans: Oscillatory motion

(2) a minute hand

Ans: Circular motion

(3) a see saw

Ans: Periodic motion

(4-5) children in a march past

Ans: Uniform motion, Linear motion

(6) a stone rolling down a hillside.

Ans: Random motion

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