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Ninth Grade (Grade 9) Physics Questions

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Grade 9 :: Energy and Work by der1228
Which form of energy does a plant store when light is transformed during photosynthesis?
  1. chemical energy
  2. thermal energy
  3. mechanical energy
  4. electrical energy
Grade 9 :: Sound and Light by erinann02
The pitch of a sound depends on its
  1. amplitude
  2. elasticity
  3. density
  4. resonance
  5. frequency
Grade 9 :: Sound and Light by zvolanem
Loudness describes what you feel
  1. True
  2. False
Grade 9 :: Sound and Light by erinann02
What is intensity measured in?
  1. Hertz
  2. Millimeters
  3. Decibels
  4. mph
Grade 9 :: Sound and Light by zvolanem
The pitch of a sound depends on its
  1. frequency
  2. resonance
  3. amplitude
  4. intensity
Grade 9 :: Magnetism and Electricity by jlovering
When you are at home, turning off a light usually does not turn off your T.V. This is because:
  1. Most electrical devices in a house are on parallel circuits
  2. Most electrical devices in a house are on series circuits
  3. They have different sources of voltage
  4. A T.V. does not require electricity.
Grade 9 :: Energy and Work by der1228
Energy stored in the bonds between atom is called
  1. kinetic energy
  2. mechanical energy
  3. chemical energy
  4. thermal energy
Grade 9 :: Sound and Light by zvolanem
Intensity is the amount of energy the sound wave carries
  1. True
  2. False
Grade 9 :: Sound and Light by zvolanem
The speed of sounds depends on               ? (choose more than one)
  1. Elasticity
  2. Resonance
  3. Density
  4. Loudness
  5. Frequency
  6. Temperature
Grade 9 :: Sound and Light by erinann02
Frequency is measured in
  1. Yards
  2. Hertz
  3. Meters
  4. Decibels
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