What Are Waves?
A __________ is a disturbance that transfers energy from one place to another.
wave
List the 4 properties of waves
Frequency
Amplitude
Wavelength
Speed
(FAWS)
What does the Law of Reflection state?
The angle of reflection = the angle of incidence
All waves change speed when they enter a new medium, but for refraction to occur, the wave must enter the new medium at _________________.
an angle
What is the medium for seismic waves?
The Earth
__________ is the ability to do work.
Energy
The greater the amplitude of the wave equals the greater the ___________ of the wave.
Energy
What is the angle of reflection?
The angle between the reflected wave and the imaginary perpendicular line.
A _________ wave is a wave that appears to stand in one place even though it is 2 waves interacting.
standing
Name the 3 types of seismic waves.
1. Primary (longitudinal)
2. Secondary (transverse)
3. Surface
_____________ is the material through which a wave travels. Give an example
Medium
Gases - air, liquids - water, solids - rope
What is the formula for speed?
wavelength X frequency
What is the angle of incidence?
The angle between the incoming wave and the imaginary perpendicular line.
______________ is the bending of waves due to a change in speed.
Refraction
What is a tsunami?
A huge surface wave caused by underwater earthquake.
_____________ waves require a medium to travel through.
Mechanical.
____________ is the number of complete waves that pass a given point in a certain amount of time. What unit is it measured in.
Frequency.
Hertz
Reflection in mirror, echo, glare on window.
What are the 2 types of inference?
1. Constructive - waves combine and larger amplitude.
2. Destructive - waves combine and smaller amplitude.
What tool is used to detect earthquakes?
Seismograph
What are the 3 types of waves?
1. Transverse waves
2. Longitudinal Waves
3. Surface Waves
____________ is how far a wave travels in a unit of time.
Velocity
What is reflection?
When an object or wave hits a surface and can't pass so it bounces off.
When a wave passes a barrier or moves through a hole in a barrier, it bends and spreads out. This is called __________.
Diffraction
When you use 3 seismographs to determine the location of the epicenter of earthquakes, that is called what?
Triangulation