X-periments
A2.
Gabriela Campa García # 4
Netherlands 8°A
RESEARCHING.
Gabriela Campa García
A wave is a transfer of energy from one point to another without the transfer of material
between the two points.
It is important to realize that a wave is quite a different object than a particle. A baseball
thrown though a window transfers energy from one point to another, but this involves the
movement of a material object between two points. A common example of a wave is a wave
on the ocean - we know they carry energy, as they cause erosion on the shore, but material
(i. e. , water) is not continuously being transferred onto the shore. Another example of a
wave is a sound wave, which is vibrations of air molecules which propagate from one place
to another. These also carry energy, but do not involve the mass movement of air from one
place to another.
The main properties of waves are defined below.
Amplitude: the height of the wave, measured in meters.
Wavelength: the distance between adjacent crests, measured in meters.
Period: the time it takes for one complete wave to pass a given point, measured in seconds.
Frequency: the number of complete waves that pass a point in one second, measured in
inverse seconds, or Hertz (Hz).
Speed: the horizontal speed of a point on a wave as it propagates, measured in meters /
second.
Not all of these properties are independent; one has the relations
Period = 1 / frequency
Speed = wavelength / period = wavelength x frequency
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Different types of waves exhibits specific characteristics. These characteristics are used to
distinguish between wave types. Orientation of particle motion relative to the direction of
energy propagation is one way waves are characterized. There are three categories:

Longitudinal waves - Movement of the particles are parallel to the motion of the
energy. Sound waves moving through the air is an example of this type of wave.

Transverse waves - movement of the particles are at right angles (perpendicular)
to the motion of the energy. Movement of a wave through a solid object like a
stretched rope or a trampoline is an example of this type of wave.
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
Surface waves - particles travel in a circular motion. These waves occur at
interfaces. Examples include waves in the ocean and ripples in a cup of
water. One consequence of occurring at an interface is that the motion of the
particles diminish with distance from the interface. The further from the interface
the smaller the rotation of the particles until as some distance from the surface,
there is no more movement or energy propagation.
I think that this information it is so important for all the people because they need to
know everything about waves, waves are so important because without they the energy
will can´t transfer from one point to another. I thing that the people know what is a wave
but they didn’t know about the properties and the types of waves and I think that this is
so important, for this reason I will made a newsletter of the waves.
Staroscik, A.. (December 23, 2013). Types of waves. May 12, 2015, de Science Premier Site web:
http://scienceprimer.com/types-of-waves
-----------. (1999-09-29). Properties of waves. May 12, 2015, de ------------ Site web:
http://theory.uwinnipeg.ca/mod_tech/node120.html
Levine, J... (September 19, 2011). Light and Color. May, 12 2015, de Physics 1230 Site web:
http://www.colorado.edu/physics/phys1230/phys1230_fa01/topic5.html
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I like because Idk
I like because is original.
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