Question

True or false :
1. Wrist watches use the principle of pendulum.
2. Measurement is a process of comparison.
3. Occurrence of day and night is a periodic event.
4. Pendulum clocks and electronic watches were used by early men.
5. in sundiais, the shadow f trees help us to measure the time.​

Answer 1

Answer:

True or false :

1. Wrist watches use the principle of pendulum.

2. Measurement is a process of comparison.

3. Occurrence of day and night is a periodic event.

4. Pendulum clocks and electronic watches were used by early men.

5. in sundiais, the shadow f trees help us to measure the time.

answer

1. no
2. yes
3. yes
4. no
5. yes