science

• What are the three key properties of waves?

  Amplitude, frequency, and wavelength
• How is the period of a wave related to its frequency?

  The period is the inverse of frequency
• What is the relationship between wave speed, wavelength, and frequency?

  Wave speed equals frequency times wavelength
• How do you calculate wave speed using the wave equation?

  Use the equation: $v =$$f \times \lambda$
• What is the amplitude of a wave?

  Maximum displacement from undisturbed position
• How does amplitude affect the energy of a wave?

  Bigger amplitude means more energy carried
• What is the definition of wavelength?

  Distance between equivalent points on adjacent waves
• What is frequency in the context of waves?

  Number of waves passing a fixed point per second
• What is the unit of frequency?

  Hertz (Hz)
• What is the period of a wave?

  Time taken for each wave to pass a point
• How do you calculate the period of a wave given its frequency?

  Use the equation: $T =$$1/f$
• What is the speed of a wave?

  Distance traveled by each wave per second
• How is wave speed calculated using frequency and wavelength?

  Wave speed is frequency times wavelength
• If a wave has a frequency of 1 Hz and a wavelength of 4.0 m, what is its speed?

  12 m/s
• How do you measure the speed of sound in air?

  Use distance and time taken
• What happens to sound when two metal objects crash together?

  You hear the sound delayed due to travel time
• What are mechanical waves?

  Waves that travel through a medium
• What are electromagnetic waves?

  Waves that can travel through a vacuum
• What is the speed of electromagnetic waves in a vacuum?

  300,000 kilometres per second
• What is a transverse wave?

  Waves oscillate perpendicular to energy transfer
• What can waves be used for?

  To transfer energy and information
• How do transverse waves behave on a rope?

  The ribbon moves up and down, not along
• What are transverse waves?

  Waves that oscillate perpendicular to energy transfer
• What is a longitudinal wave?

  Waves oscillate parallel to energy transfer
• What are longitudinal waves?

  Waves that oscillate parallel to energy transfer
• Which types of waves are transverse?

  All electromagnetic waves and water ripples
• How do sound waves travel through air?

  By creating compressions and rarefactions
• Which types of waves are longitudinal?

  Sound waves and seismic waves
• How do waves transfer energy?

  Without transferring matter
• What is the difference between transverse and longitudinal waves?

  Transverse waves oscillate perpendicular; longitudinal parallel
• What are electromagnetic waves?

  Waves that can travel through a vacuum
• What are the key points about waves?

  • Waves transfer energy and information
  • Transverse waves oscillate perpendicular to energy transfer
  • Longitudinal waves oscillate parallel to energy transfer
  • Mechanical waves need a medium
• What is the speed of electromagnetic waves?

  300,000 kilometres per second
• How can you demonstrate the difference between longitudinal and transverse waves using a skinny spring?

  • Move one end of the spring to create longitudinal waves
  • Move one end of a rope up and down to create transverse waves
• How do you create transverse waves on a rope?

  By moving one end up and down
• Describe the motion of a small boat on a pond when waves travel across it.

  • The boat moves up and down
  • The boat does not travel away from the waves
• What happens to the ribbon when transverse waves are created?

  The ribbon moves up and down
• How do longitudinal waves move through a medium?

  By creating compressions and rarefactions
• What types of waves are sound waves and electromagnetic waves?

  • Sound waves are longitudinal
  • Electromagnetic waves are transverse
• What is the motion of a small ball floating on a pond when waves travel across it?

  The ball moves up and down without traveling