Features+of+a+Wave

=Unit 2 Optics=

4.1 Properties of Waves

 * 4.1 features of a wave** page 135

-ocean waves || -trough || -at peek of trough hightest point ||
 * Questions || Answers ||
 * What are two different kinds of waves? || -sound waves
 * How are waves produced? || -disturb water / transfer energy through it ||
 * How can you describe a force on a wave? || -is a push or pull on an object ||
 * What are the highest and lowest point in a wave? || -crest
 * How can you describe a force on a wave? || -is a push or pull on an object ||
 * What are the highest and lowest point in a wave? || -crest
 * What are the highest and lowest point in a wave? || -crest
 * When an object is on a wave does the object itself move forward? || -no, just up and down ||
 * When a trough comes through, does an object end at the highest point of the wave or the lowest? || -ends a the lowest
 * When a trough comes through, does an object end at the highest point of the wave or the lowest? || -ends a the lowest
 * When a trough comes through, does an object end at the highest point of the wave or the lowest? || -ends a the lowest
 * What are the two areas you can measure a wavelength? || -distance from crest 2 crest or from tough 2 trough ||
 * What are wavelengths measured in? || -metres ||
 * What is a wavelength? || -distance over which wave repeats ||
 * What are wavelengths measured in? || -metres ||
 * What is a wavelength? || -distance over which wave repeats ||
 * What is a wavelength? || -distance over which wave repeats ||

Features of a Wave

(Jessica BLK H) A wave is a variation that transfers energy progressively from point to point through matter or space without causing any permanent displacement. There are many different types of waves and they travel differently. Sound waves disturb the air and transfer energy through it. Different waves such as ocean waves disturb the water and transfer energy through it. The energy travelling through waves is the capacity to apply a force of pushing or pulling on an object. There are also parts in waves. The crest of the wave is the highest point in a wave. On the other hand, the trough is the lowest point in a wave. Between these crests and troughs is a certain distance. This distance is called the wavelength. The amplitude is the height of a wave crest or depth of a wave trough, as measured from its rest position. This amplitude is related to how much energy is carried by the wave. The larger the amplitude, the greater the energy is transported in the wave. Frequency is the number of repetitive motions or oscillations that occur in a specific time. An example of frequency is hertz (Hz). For example, if two wave crests were to pass under an object every second, then the object is said to be vibrating or oscillating at a frequency of 2 Hz. But all waves are different in their own way. Waves can differ in how much energy they carry and in how fast they travel.