Presentation on theme: "We are learning to: demonstrate how waves transfer energy. We are looking for: a disturbance or variation that transfers energy from one point to another."— Presentation transcript:
We are learning to: demonstrate how waves transfer energy. We are looking for: a disturbance or variation that transfers energy from one point to another point in a medium. Transverse waves- wave and medium move in direction that is perpendicular to each other Longitudinal waves- wave and medium move in same direction
We are learning to: describe the properties of waves. We are looking for: Wavelength-distance from crest to crest (transverse wave), or from compression to compression (longitudinal wave) Frequency-number of waves that pass a given point each second Amplitude-distance from rest position to the crest (transverse wave); measures how compressed the particles of the medium are (longitudinal wave); determines the amount of energy of each wave
3 We are learning to demonstrate how waves transfer energy. We are looking for how waves interact with an object or other waves. They either: Transmit-wave energy passes through an object. Reflect-wave energy bounces off an object. Refract – wave changes speed as it passes from one medium to another medium Diffract – wave spreads out as it passes through an opening or around the edge of a barrier Absorb-wave energy is taken in by an object they encounter. Interference-wave energy of multiple waves is combined.
A transverse wave….. A.Vibrates particles perpendicular to the direction of wave B.Vibrates particles parallel to the direction of the wave C.Vibrates both parallel and perpendicular to the direction of the wave D.Vibrates particles in one direction E.Help! I don’t understand.
What type of wave is represented by picture? A.Transverse B.Longitudinal C.Surface D.Seismic E.Help! I don’t understand.
A wave is a disturbance that transfers A.matter. B.particles. C.energy. D.a medium. E.Help! I don’t understand.
What do you call the material that a wave travels through? A.Plasma B.Space C.Vacuum D.Medium E.Help! I don’t understand.
What type of wave is represented by the animation? A.Longitudinal B.Transverse C.Surface D.Seismic E.Help! I don’t understand.
In the diagram, identify the wave property “A” A.Frequency B.Amplitude C.Wavelength D.Help! I don’t understand.
Which of the following is true about waves in the diagram? A.Wave X has a higher frequency than Wave Y B.Wave X has a lower frequency than Wave Y C.Wave X has the same frequency as Wave Y D.Help! I don’t understand.
Which of the waves in the picture has the greatest amplitude? A.1 B.2 C.3 D.Help! I don’t understand.
Which property measures the amount of energy transferred by a wave? A.Wavelength B.Frequency C.Amplitude D.Help! I don’t understand.
What happens to the energy of a wave when the crest of a transverse wave meets the crest of a second transverse wave? A.Energy decreases. B.Energy increases. C.Energy stays the same. D.I don’t get it! Help!
What is it called when a wave bounces off of a barrier? 14 a.Refraction b.Reflection c.Diffraction d.Help! I don’t know.
What happens to waves as they go through an opening or around a corner of an object? 15 A.They are refracted. B.They are reflected. C.They are diffracted. D.Help! I don’t know.
As waves go through different mediums, what happens to them? 16 A.Waves change speed and are reflected. B. Waves change speed and are refracted. C.Waves change speed and are diffracted. D.Help! I don’t know.