What is the definition of a wave?
A wave is a disturbance that transfers energy from one place to another without transferring matter.
True or False: Waves can be classified as either mechanical or electromagnetic.
True
What type of wave requires a medium to travel through?
Mechanical wave
Fill in the blank: The speed of a wave is given by the formula ___ = frequency × wavelength.
speed
What is the unit of frequency?
Hertz (Hz)
What is the relationship between frequency and wavelength in a wave?
They are inversely proportional.
True or False: Electromagnetic waves can travel through a vacuum.
True
What is the wavelength of a wave?
The distance between two consecutive points in phase on a wave.
What is amplitude in the context of waves?
The maximum displacement of points on a wave from its rest position.
Multiple Choice: Which of the following is NOT a type of wave? A) Sound B) Light C) Gravity D) Time
D) Time
Define ‘period’ in relation to waves.
The time taken for one complete cycle of the wave to pass a given point.
What is the formula for calculating the speed of a wave?
Speed = Frequency × Wavelength
True or False: Waves can interfere with each other.
True
What is constructive interference?
When two waves meet in phase and combine to form a wave of greater amplitude.
What is destructive interference?
When two waves meet out of phase and combine to reduce overall amplitude.
Fill in the blank: The phenomenon of a wave bending around obstacles is called ___.
diffraction
What is refraction?
The bending of a wave as it passes from one medium to another due to a change in speed.
What is the principle of superposition?
When two or more waves overlap, the resultant displacement is the sum of the individual displacements.
Multiple Choice: Which type of wave oscillates perpendicular to the direction of energy transfer? A) Longitudinal B) Transverse
B) Transverse
What is a longitudinal wave?
A wave in which the oscillations are in the same direction as the direction of energy transfer.
True or False: Sound waves are an example of transverse waves.
False
What is the Doppler effect?
The change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.
What is the critical angle in refraction?
The angle of incidence above which total internal reflection occurs.
Fill in the blank: When light travels from a medium of higher refractive index to one of lower refractive index, it bends ___ the normal.
away from
