Chapter 17 Mechanical Waves
Study guide Ch. 17 & 18 Waves, Light & EM Spectrum Name___________________________
Study Your Notes, textbook, worksheets, workbook pages & labs to fill in this information:
Chapter 17:
Mechanical Waves: a disturbance in matter that carries energy from one place to another
Transverse Waves: a wave that causes the medium to vibrate at right angles to the direction in which the wave travels.
Surface waves: a wave that travels along a surface separating two media
Longitudinal waves: a wave tin which the vibration of the medium is parallel to the direction to wave travels
Sound waves: longitudinal waves
Diffraction: the bending of a wave as it moves around an obstacle or passes through a narrow opening
Refraction: the bending of a wave as it enters a new medium at an angle. …show more content…
Reflection: when a wave bounces off a surface that it cannot pass through
Crest: the highest point of the wave above rest position
Amplitude: the maximum displacement of the medium from rest position
Rarefaction: an area where the particles in a medium are spread out
Compression: an area where the particles of a medium are spaced close together
Trough: the lowest point of a wave below rest position.
Wavelength: the distance between a point on one wave and the same point on the next cycle of the
Frequency: the number of complete cycles in a given time
The Doppler Effect: a change in sound frequency caused by the motion of the sound source, motion of the listener, or both
Constructive interference: when two or more waves combine to produce a wave with a larger displacement
Destructive interference: when two or more waves combine to produce a wave with smaller
displacements
Wave Calculation Equations: Draw all 4 triangles, be able to calculate answers like wkbk 4-51 to 4-54
Draw Figure 2 and label p. 501 here:
Draw and label figure 3 p. 502 here
Chapter 18:
Electromagnetic Waves: transverse waves consisting of changing electric fields and changing magnetic fields
Electromagnetic spectrum: the full range of frequencies of electromagnetic radiation
Light as a wave:
Light as particles:
Infrared waves: higher frequencies than radio waves and lower frequencies than red light. It is used as a source of heat and to discover areas of heat differences.
Ultraviolet waves: higher frequencies than violet light. UV rays has applications in health and medicine, and in agriculture
Radar waves: radar technology uses a radio transmitter to send our short bursts of radio waves. The waves deflect off the objects that they encounter, and bounce back to where they came from. The returning waves are them picked up and interpreted by the radio receiver.
Gamma Rays: shortest wavelength in the electromagnetic spectrum. It is used in the medical field to kill cancer cells and to make pictures of the brain, and in industrial situations as an inspection tool
Radio waves: has the longest wavelength in the electromagnetic spectrum. They are used in radio and television technologies, as well as in microwave ovens and radar
Photons: packets of electromagnetic energy
Visible light spectrum: the light that the human eye can see. People use visible light to see, to help keep them safe, and to communicate with one another.
Polarized light: light with waves that vibrate in only one plane
Draw Figure 9 and label p. 540 here:
Study Your Notes, textbook, worksheets, workbook pages & labs to fill in this information:
Chapter 17:
Mechanical Waves: a disturbance in matter that carries energy from one place to another
Transverse Waves: a wave that causes the medium to vibrate at right angles to the direction in which the wave travels.
Surface waves: a wave that travels along a surface separating two media
Longitudinal waves: a wave tin which the vibration of the medium is parallel to the direction to wave travels
Sound waves: longitudinal waves
Diffraction: the bending of a wave as it moves around an obstacle or passes through a narrow opening
Refraction: the bending of a wave as it enters a new medium at an angle. …show more content…
Reflection: when a wave bounces off a surface that it cannot pass through
Crest: the highest point of the wave above rest position
Amplitude: the maximum displacement of the medium from rest position
Rarefaction: an area where the particles in a medium are spread out
Compression: an area where the particles of a medium are spaced close together
Trough: the lowest point of a wave below rest position.
Wavelength: the distance between a point on one wave and the same point on the next cycle of the
Frequency: the number of complete cycles in a given time
The Doppler Effect: a change in sound frequency caused by the motion of the sound source, motion of the listener, or both
Constructive interference: when two or more waves combine to produce a wave with a larger displacement
Destructive interference: when two or more waves combine to produce a wave with smaller
displacements
Wave Calculation Equations: Draw all 4 triangles, be able to calculate answers like wkbk 4-51 to 4-54
Draw Figure 2 and label p. 501 here:
Draw and label figure 3 p. 502 here
Chapter 18:
Electromagnetic Waves: transverse waves consisting of changing electric fields and changing magnetic fields
Electromagnetic spectrum: the full range of frequencies of electromagnetic radiation
Light as a wave:
Light as particles:
Infrared waves: higher frequencies than radio waves and lower frequencies than red light. It is used as a source of heat and to discover areas of heat differences.
Ultraviolet waves: higher frequencies than violet light. UV rays has applications in health and medicine, and in agriculture
Radar waves: radar technology uses a radio transmitter to send our short bursts of radio waves. The waves deflect off the objects that they encounter, and bounce back to where they came from. The returning waves are them picked up and interpreted by the radio receiver.
Gamma Rays: shortest wavelength in the electromagnetic spectrum. It is used in the medical field to kill cancer cells and to make pictures of the brain, and in industrial situations as an inspection tool
Radio waves: has the longest wavelength in the electromagnetic spectrum. They are used in radio and television technologies, as well as in microwave ovens and radar
Photons: packets of electromagnetic energy
Visible light spectrum: the light that the human eye can see. People use visible light to see, to help keep them safe, and to communicate with one another.
Polarized light: light with waves that vibrate in only one plane
Draw Figure 9 and label p. 540 here: