Section 4 Properties Of Waves Flashcards
Direction of waves travels in
Direction of propagation
What is amplitude
Maximum displacement of a point on the wave from its undistributed position
Wavelength
The distance between the same point on two adjacent waves
Frequency
The number of complete waves passing a certain point
Transverse waves
The vibrations are perpendicular to the direction in which the wave is propagated
Longitudinal waves
The vibrations are parallel to the direction in which the wave is propagated
Wave speed
The speed at which energy is transferred
Wave speed equation
Wave length/frequency
The law of reflection
Angle of incidence = angle of reflection
What is reflection used for
To form optical images
What do mirrors do
Virtual images
Refraction
Waves changing Direction at a boundary
How to find refractive index
N = sin I/sin r
When does internal reflection occur
When a wave tries to leave a material
What is total internal reflection
When no light leaves a material
What is critical angle
Angle of incidence on a boundary that will Cause the angle of refraction to be 90*
Critical and formula
1/sin c
Diffraction meaning
Waves spreading out
Describe how a water wave in a ripple tank behaves as it passes the edge of an obstacle
The water waves spread out as they bend around the edge of the obstacle
Which type of electromagnetic wave has the longest wave length
Radio
What type of em radiation is used to cook food in electric grills
Infrared radiation
Which wave property determines how loud a sound is
Amplitude
How do like charges act
Repel and unlike charges attract
What type of objects have electrical fields
Electrons
