Help
Options
Question
What do waves carry?
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
Describe Transverse wave
Remaining cards (92)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
SP4
GCSE Separate Science Physics
| Question | Answer |
|---|---|
| What do waves carry? | They carry energy |
| Describe Transverse wave | The vibration causing the wave is perpendicular to the direction of in which the wave is travelling |
| What type of waves are sound waves ? | Longitudinal |
| How do the particles move when a longitudinal wave passes through them? | They move backwards and forwards |
| What other types of wave are longitudinal? | Primary seismic waves. |
| What type of waves are electromagnetic waves? | They are transverse |
| What is the frequency of a wave? | The number of waves passing a point each second. |
| What is the time period of a wave? | The length of time it takes for one wave to pass a given point |
| What is the amplitude of a wave? | " Maximum distance of a point on the wave away from its rest position |
| " What unit is frequency measured in? | "Hertz |
| " What unit is wavelength measured in? | Meters |
| What are the two equations for wave speed? | Wave speed= frequency x wavelength Wave speed =distance/time |
| A wave travels 56 m in 7 seconds, what is its wave speed | Wave speed =distance/time =56/7=8m/s |
| A wave travels at 10m/s, how far will it travel in 8 seconds? | Distance = speed x time =10x 8 =80m |
| A wave has a frequency of 20Hz and a wavelength of 8m, what is its wave speed? | Wave speed= frequency x wavelength = 20 x 8= 160m/s |
| wave has a wavelength of 20cm and has a frequency of 20kHz, what is its wavelength in m/s? | "Wave speed= frequency x wavelength= 20000x 0.2 =4000m |
| " A wave travels at 5m/s and has a wavelength of 20cm, what is its frequency? | frequency = speed/wavelength = 5/0.2 =25Hz |
| When do waves change their direction? | When they move into a different medium |
| What is the name given to the boundary between 2 mediums? | Interface. |
| What is the normal? | A line at 90 degrees to the interface |
| What happens when line travels along the normal? | It travels in a straight line but will change its speed at the interface. |
| How does the direction of light change when it moves from glass to air? | It moves away from the normal. |
| What happens to the frequency of the waves when they refract? | It stays the same. |
| What happens to the speed of water waves as they travel from deep to shallow water? | They slow down |
| In which material glass or air does light travel the fastest? | Air |
| Define refraction | ange in speed and direction when a wave travels from one medium to another |
| What happens to the speed of light, frequency, wavelength as it travels from air to glass? | "Speed decreases, wavelength decreases, frequency does not change. |
| " All angles in optics are measured from the normal, what is the normal | An imaginary line drawn at right angles to the surface of a lens or mirror where a ray hits it. |
| What term describes sound reflecting? | echo |
| What does the word transmitted mean for waves? | When waves pass through something and are not absorbed or reflected |
| What does the term absorbed mean for waves? | When the wave disappears as its energy is transferred to the material |
| White light consists of mixture of different frequencies.What device enables us to split these frequencies? | Prisam |
| What does this tell us about how waves of different frequencies travel in glass? | "Different frequencies travel at different speed in glass |
| " What wave property is the pitch of a sound linked to? | Frequency, the higher the frequency the higher the pitch |
| How is the speed of sound related to the density of a material? | The greater the density the greater the speed. |
| What type of waves are sound waves? | Longitudinal |
| What happens to sound waves when they hit a surface? | Some of its energy is reflected, some is transmitted |
| What do some waves to the particles in a solid? | The sound waves cause a pressure on the surface that causes the particles in the solid to vibrate. |
| What happens when sound waves hit the ear drum in the ear? | It vibrates. |
| What is the purpose of the three bones in the ear? | They amplify the vibrations |
| Describe the structure of the cochlea? | A coiled tube containing a liquid and a membrane down the centre |
| Where is the membrane in the cochlea they thickest? | At the base |
| What affects which part of the membrane will vibrate? | The frequency of the sound wave in the liquid |
| Which part of the membrane detects low sounds? | Apex |
| What is the range of human hearing? | 20Hz to 20,000Hz |
| What is the highest frequency humans can hear? | 20kHz |
| What is the lowest frequency humans can hear? | 20Hz |
| What is ultrasound? | Sound with a frequency greater than 20kHz |
| Name 2 animals that communicate through ultrasound? | Bats, dolphins |
| What is Sonar? | Equipment carried on ships that produces and detects ultrasound. |
| Give 2 examples of how sonar can be used? | Fishing, measuring the depth of the sea |
| H A ship detects a sonar pulse and 4 seconds after it was emitted. The speed of sound in sea water is 1500m/s. | "Distance = speed x time = 1500 x 4 = 6000m |
| " How deep is the sea? | 3000m |
| Name a common use of ultrasound in medicine? | Detailed images of unborn babies to see how fetus is developing |
| Why is a gel used on the skin? | Gel stops the ultrasound just reflecting from the skin |
| How can ultrasound be used to clean your teeth? | The ultrasound head of the tooth brush produces millions of tiny bubbles that when they collapse they not the dirt off. |
| What sounds are infra-sounds? | Sounds that are too low to hear, have a frequency less than 20Hz |
| Which waves travel furthest, infrasound or audible sound? | Infrasound |
| What produces infrasound? | Volcanic eruptions, earthquakes, large animals e.g. whales and elephants |
| What are the two types of seismic waves? | P waves or Primary waves and S waves or secondary waves |
| What type of waves are P waves? | Longitudinal waves |
| What type of wave are S waves? | Transverse |
| What types of materials can P waves travel through? | Solids, liquids and gases |
| What type of materials can S waves travel through? | Solids |
| What is the name of the device that detects earthquakes? | Seismometer |
| Name the layers of the earth starting from the centre and state whether they are solid or liquid. | "Inner core- solid Outer core- liquid Mantle –semi-solid Crust solid, |
| " Name an example of a transverse wave | light, water, any electromagnetic |
| Name an example of a longitudinal wave | Sound |
| Oscillations are along the same direction as the direction of travel is a _________ wave | longitudinal |
| Oscillations are at right angles to the direction of travel in a ____________ wave | transverse |
| The region in a longitudinal wave where particles are closest together is a … | compression |
| The region in a longitudinal wave where particels are furthest apart is a… | rarefaction |
| What do all waves transfer? | Energy |
| What are seismic waves | Waves that travel through the Earth |
| Why can we see the sun but not hear it? | Light can travel through a vacuum, sound cannot |
| The pitch of a sound is related to its | Frequency |
| The colour of light is related to its | Frequency |
| The maximum displacement of a point on a wave away from its rest position is the… | Amplitude |
| The distance from a point on one wave to the equivalent point on the next wave is the … | wavelength |
| The number of waves passing a point each second is the… | Frequency |
| The time needed for one wave to pass a given point is the… | period |
| An object is said to _________ radiation when energy from an EM wave is taken up by the object | absorb |
| An object is said to _________ radiation when a wave can pass through the object | transmit |
| The process taking place when a wave bounces off of a surface | reflection |
| The process taking place when a wave enters a different density medium and changes direction | refracion |
| Refraction changes both the _________ and ___________ of a wave | direction and speed |
| Which two angles are equal in reflection | angle of incidence and angle of reflection |
| Draw a transverse wave and label the wavelength and amplidtue | teacher to draw on board… |
| Draw a longitudinal wave and label the wavelength | teacher to draw on board… |
| Write the equation linking frequency, wavelength and wave speed | v = fλ |
| What is the unit of frequency? | Hertz (Hz) |
| What is the unit of wavelength? | metres (m) |
| What is the unit of wave speed? | metres per second (m/s) |
Created by:
Davenant Foundation School
Popular Physics sets