Question

1.Draw the symbols of the following circuit components.

(i) electric cell

(ii) switch in off position

(iii) electric bulb

(iv) battery

2.Name the following:-

a) Device in vehicles which measures the distance traveled by vehicle

b) Device in vehiclesWhich measures the speed of vehicles.

3. Why do we breathe deeper and faster after finishing the race?

4. Write the composition of urine.

5. Write the difference between aerobic and anaerobic respiration.

6. A boy riding a bicycle covers a distance of 20 meters in 5 seconds.

Calculate the speed of boy while riding a bicycle.​

Answer 1

Symbol of circuit components