Physics Waves and the Electromagnetic Spectrum
No description yet. This curated deck is ready for daily study.
Card preview (24)
Waves transfer ENERGY but not MATTER. True or False.
True
What does a wave transfer?
Energy from one place to another.
Name 2 things that waves can transfer
Energy and information
Name 1 thing that waves do not transfer
Matter
What causes a wave?
A vibration
What is the definition of a transverse wave
The vibration causing a transverse wave is PERPENDICULAR to the direction of wave travel
What is the definition of a longitudinal wave?
The vibration causing a longitudinal wave is PARALLEL to the direction of travel of the wave.
What happens to the particles, when a wave travels through a medium (medium means whatever the wave is travelling through, so it could be water or air for example)?
The particles of the medium vibrate
What is the function of the particles of the medium when they vibrate?
To transfer energy
How is energy transferred through a medium?
When particles of a medium vibrate.
When energy is transferred through a medium (eg water, air), do particles move or stay in the same place?
Stay in the same place, they just vibrate.
Example - if you drop a twig into calm water, it creates ripples on the waters surface that spread out. The ripples DONT carry the water or twig away with them though.
Example - if you strum a guitar string, it produces sound waves in the air. The sound waves don’t carry the air away from the guitar. If they did, you’d feel a wind whenever there is a sound.
All waves are either TRANSVERSE or LONGITUDINAL. True or False?
True. All waves are either TRANSVERSE or LONGITUDINAL.
In TRANSVERSE waves, what direction are the vibrations to the direction the wave travels?
The vibrations are PERPENDICULAR (right angles) to the direction the wave travels. (So think of a spring being wiggled up and down to give a transverse wave and vibrations go up and down, travelling in a different direction to way the wave travels - see p 165).
Give 3 examples of TRANSVERSE waves?
1) Electromagnetic Waves 2) Water Waves 3) Seismic S Waves (produced in the ground during earthquake)
In LONGITUDINAL waves, what direction are the vibrations to the direction the wave travels?
The vibrations are in the SAME or PARALLEL direction as the direction the wave travels. The vibrations have COMPRESSIONS (where particles squish together) and RAREFACTIONS (where the particles spread out). If you push the end of a spring together you get a longitudinal wave.
Give 2 examples of LONGITUDINAL waves?
1) Sound waves 2) Seismic P waves
1) Electromagnetic Waves 2) Water Waves 3) Seismic S Waves are all what type of waves?
TRANSVERSE waves
1) Sound waves 2) Seismic P waves are both what types of waves?
LONGITUDINAL waves
There are 5 words you need to know to describe waves - see P 165
What is a COMPRESSION (in relation to waves)
Is when particles in a LONGITUDINAL wave are CLOSEST together
Describe RAREFRACTION (in relation to waves)
Is when particles in a LONGITUDINAL wave are FURTHEST apart
Describe DISPLACEMENT (in relation to waves)
Is how far a PARTICLE on the wave is from its REST position