Question

Q1. Fill in the blanks:
(i) The strength of a force is usually expressed by its __________.
(ii) Distilled water is poor ________________ of electric current.
(iii) Loudness is determined by the _______________ of vibration.
(iv) The substance that reduces friction is called _____________.
(v) Quality of voice is different when ____________ are tight or loose and thick or thin.

Answer 1

volume
conductor
density

Answer 2

1. Magnitude: the magnitude is the

force (net force) acting

on an object or mass

the higher the

magnitude the higher

the force.

2. Conductor: distilled water doesn't

have the required salts

to conduct electricity.

3. Amplitude: the amplitude of sound

wavee determine the

loudness of sound the

higher the amplitude

the higher the

loudness

4. Lubricant: lubricant are high in

viscosity thus they flow

slowly (honey is also

high in viscosity and

flow slowly)

5. Vocal Cord: the muscles attached

to vocal cord contract

(tight) or

Stretch (loose) the

vocal cord became

thickk or thin that

changes the

frequency (quality) of

sound.