Define treble.
High pitch sounds are called treble.
physics
Define monotone.
A monotone is a continuous sound, especially of someone speaking, that doesn’t change in pitch.
Define frequency.
The frequency of a wave is the number of waves passing a point in a certain time.
What is a pitch?
Pitch is a sensation, which determines the shrillness of sound.
What is Sound?
A sound is a form of energy that excites in our ears the sensation of hearing.
State two applications of thermal expansion.
Electic iron and fire alarm
Name the two substances which expand on heating.
Cooper and Iron
What is Riveting?
Riveting is the act of using rivets to secure two overlapping plates very tightly so that the joint becomes leak-proof.
What is a bimetallic strip?
A bimetallic strip is made from two thin strips of metal which expand by different amounts when heated.
What is evaporation?
The process in which a substance changes its state from the liquid state to the gaseous state without boiling.