15 What 3 characteristics do All Waves have? AmplitudeWavelengthFrequency
16 What does the size of the amplitude of a wave tell us? HIGH AMPLITUDE = HIGH AMOUNTS OF ENERGYLOW AMPLITUDE = LOW AMOUNTS OF ENERGY
17 What unit do we use to measure Wavelengths in? Meters
18 What greek letter do we use to represent a wavelength? Lambda
19 What are the 3 units we can use for Frequency of a wave? Waves / secondCycles / second1/s = Hertz (Hz)
20 Name the 2 types of Mechanical waves. TRANSVERSE WAVESLONGITUDINAL WAVES
21 Which type of wave form crests and troughs? TRANSVERSE
22 COMPRESSIONS RAREFACTIONS Longitudinal wave do not have crests and troughs, instead they have what?COMPRESSIONSRAREFACTIONS
23 How does the medium move when a longitudinal wave moves through it? The medium vibrates horizontally.
24 Surface Waves move both horizontally and vertically simultaneously, which produces what kind of movement?Circular
25 Speed of Waves What is the wave equation? V = f speed = frequency times wavelength
26 The speed of a wave is held constant within a medium The speed of a wave is held constant within a medium. So what effect on the wavelength of a wave would you expect if the frequency were doubled?The wavelength would half as much. When frequency goes up the wavelength must go down.
27 The density of water is 1 g/ml and the density of syrup is 3 g/ml The density of water is 1 g/ml and the density of syrup is 3 g/ml. Which of the above would you expect a wave to travel the slowest through?A wave would travel the slowest through the SYRUP.Waves travel slower through dense mediums.
28 A slinky is a very elastic object A slinky is a very elastic object. Explain why this is used to demonstrate wave motion instead of an object like a tree branch?A slinky has HIGH ELASTICITY !The higher the elasticity the higher the speed of a wave traveling through it.
29 Name the 4 ways waves interact. ReflectionRefractionDiffractionInterference
30 Explain reflection of a wave. Bouncing back of a wave after it strikes a boundary.
31 Explain Refraction.The change in path of a wave when it moves into a medium of a different density.
32 Explain Diffraction.The curving of waves around barriers and ability of waves to spread out in circular pattern after passing through a narrow opening. See picture below.
33 What are the 2 types of Interference? ConstructiveDestructive
34 Which of the pictures below is an example of Constructive Interference? The picture on the left is constructive interference.The picture on the right is destructive interference.
35 Nodes and Antinodes are parts of what kind of wave? Standing Wave
36 The frequency at which a standing wave occurs is called what? Resonant FrequencySometimes called Natural Frequency.