Question

Question-2 write true or false? 1 A bird sitting on a tree is said to be at rest. 2 The hands of a clock show linear motion. 3 4600 cm is equal to 46 meter. 4 The heartbeat of a normal person is an example of non periodic motion. 5 Large distances are measured in kilometers. 6 1 decade is equal to 10 years. 7 For measuring length with a scale, the zero mark on the scale should inside with one of the ends of the object to be measured. 8 1 century has thousand years. 9 Clouds have only liquid water droplets. 10 Water cycle is a continuous process that occurs in nature. true or false​

Answer 1

Answer:

1) True

2) False

3) True

4) False

5) True

6) True

7) True

8) True

9) False

10) True

Explanation:

1) A bird sitting on a tree does not do any work but has some potential energy so it is said to be at rest.

2) Hands of a clock show periodic motion.

3) 100 cm is equal to 1m so 46000cm is equal to 46m.

4) Heartbeat of a normal person is an example of periodic motion as it beats with a particular rate and its motion is repeated at a regular interval of time.

5) Large distances are measured with the help of kilometre and extremely large distances are measured with use of parsec.

6) 1 decade is equal to 10 years.

7) We do so to omit zero error of measurement.

8) 1 century has thousand years.

9) Cloud contains both liquid water droplets in majority and also crystallized water in the form of ice.

10) The evaporated water from the water bodies form clouds which when condenses falls as rain and fills the water bodies .Once again due to heat of the sun the water becomes vapours and is transported to the atmosphere, that the water cycle continues in nature.