|
Hint
|
|
Answer
|
|
How do waves pass through a solid? (Higher)
|
|
Particles in the solid vibrate and transfer kinetic energy through the Material.
|
|
What is the frequency range of a humans Hearing?
|
|
20Hz-20kHz
|
|
Define 'Ultrasound Waves' (Higher)
|
|
Waves which a frequency higher than a humans hearing.
|
|
Give examples of uses for ultrasound waves.
|
|
Medical, Industrial Imageing
|
|
What natural event causes seismic waves to be Produced?
|
|
Earthquakes
|
|
What types of seismic waves are produced?
|
|
Both, P&S waves
|
|
Name a difference between P-waves and S-waves Linking to what they are able to travel through.
|
|
P-waves travel through both solids and liquids whereas S-Waves can only travel through solids.
|
|
What are two types of waves?
|
|
Transverse, Longitudinal
|
|
What is a longitudinal wave?
|
|
Oscillations are parallel to the direction of energy transfer
|
|
What is a transverse wave?
|
|
Oscillations are perpendicular to the direction of energy transfer
|
|
Two examples of a transverse wave
|
|
Electromagnetic Waves, Seismic S-Waves, Light Waves
|
|
Two examples of a longitudinal wave
|
|
Sound waves, Seismic P-Waves
|
|
What are the two key parts of a Longitudinal wave called?
|
|
Rarefactions, Compressions
|
|
What is a waves amplituide?
|
|
The largest displacement of a point from its original or normal position
|
|
Define 'Wavelength'
|
|
Distance from a point on a wave to the same position on the adjacent Wave. (Extra Info) - Not needed in the answer often peak to peak or trough To trough.
|
|
Define the frequency of a wave
|
|
The number of waves that pass a given point each second
|
|
What units are used to determine Frequency?
|
|
Hertz, Hz
|
|
What is meant by a frequency of 200Hz?
|
|
200 waves that certain point each second
|
|
Define 'Wave Speed'
|
|
The speed at which the wave moves or at which energy is transferred Through a medium.
|
|
What does a wave transfer?
|
|
Energy
|
|
What is the equation to calculate wave Speed?
|
|
Wave Speed = Frequency x Wavelength
|
|
What word would be used to describe the Process of a wave bouncing off a surface?
|
|
Reflection
|
|
What technique is used to detect objects in deep Water and measure water depth?
|
|
Echo Sounding, high frequency sound waves are emitted, Reflected and deflected. Time difference between emission And detection along with wave speed are used to calculate distances.
|
|
What type of spectrum do electromagnetic waves form?
|
|
A continuous spectrum
|
|
Name the types of electromagnetic radiation.
|
|
Radio Waves
|
|
|
|
Microwaves
|
|
|
|
Infrared
|
|
|
|
Visible Light
|
|
|
|
Ultraviolet
|
|
|
|
X-Rays
|
|
|
|
Gamma Rays
|
|
How do the speeds of EM radiation differ in a vacuum And in the air?
|
|
Electromagnetic waves all travel at the same speed in a Vacuum and in the air.
|
|
What property of waves in different mediums cause Refraction?
|
|
Velocity, wave speed is slower in denser materials Causing refraction
|
|
In which direction from the normal do waves refract when Entering a denser medium?
|
|
Bend towards the normal, the angle of refraction is less Than the angle of incidence.
|
|
What type of waves can be produced by oscillations in An electrical circuit?
|
|
Radio Waves
|
|
How can radio waves create an alternating current in a Circuit?
|
|
When the radio waves are absorbed they induce Oscillations in a circuit with the same frequency as The waves themselves.
|
|
Where do gamma rays originate from?
|
|
They originate from changes in the nuclei of atoms
|
|
What are some health effects ultraviolet waves can cause?
|
|
Can cause skin to age prematurely. Increase the risk Of developing skin cancer.
|
|
Name examples of health effects caused by gamma and x Rays.
|
|
Ionising radiation so can cause mutation in genes Increased risk of developing various cancers
|
|
Name three practical uses for infrared radiation.
|
|
Electrical Heaters
|
|
|
|
Cooking food
|
|
|
|
Infrared Cameras
|
|
Name two practical uses for microwave radiation.
|
|
Satellite Communications
|
|
|
|
Cooking Food
|
|
Name two practical uses for radio waves
|
|
Television Transmission
|
|
|
|
Radio Transmission
|
