Measure the height of your friend and express it in (i) metres (ii) centimetres. Class 6

Measure the height of your friend and express it in (i) metres (ii) centimetres. Class 6

Question 1.

Measure the height of your friend and express it in (i) metres (ii) centimetres and (iii) millimetres. Class 6

Answer:

You can do this question on your own. If the height of your friend is 1.35 metres.

(i) In metres : 1.35 m

(ii) centimetres : 135 cm

(iii) In millimetres : 1350 mm

Question 2.

You are given a coin. Estimate how many coins are required to be placed one after the other lengthwise, without leaving any gap between them, to cover the whole length of the chosen side of a notebook. Verify your estimate by measuring the same side of the notebook and the size of the coin using a 15-cm scale. Class 6

Answer:

1. Estimate : If the side of the note¬book is 30 cm and the coin diameter is 2 cm, you need approximate 15 coins.
2. Verification : Measure the actual length of the side of the notebook and the diameter of one coin. Divide the length of the side of the notebook by the diameter of the coin to find the exact number of coins needed.

Question 3.

Give two examples each for linear, circular and oscillatory motion. Class 6

Answer:

Linear motion :

1. A car moving on a straight road.
2. A person walking in a straight line.

Circular motion :

1. Motion of a merry-go-round.
2. Motion of a fan blade.

Oscillatory motion :

1. Motion of a child on a swing.
2. Swinging of a pendulum.