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Ninth Grade (Grade 9) Physics Questions

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Grade 9 :: Magnetism and Electricity by jlovering
Complete the following statement:

If you increase the resistance in a series circuit,                               .
  1. the current will also increase
  2. the current will decrease
  3. the voltage will increase
  4. the voltage will decrease
Grade 9 :: Forces and Motion by jlovering
Ball A is a 1.50 kg ball moving at 8.00 m/s south. It strikes Ball B, a 2.00 kg ball moving at 3.00 m/s south. The velocity of Ball B after the collision is 4.50 m/s south.

What is the momentum of Ball A before the collision and after the collision?
  1. 12 before the collision, 12 after the collision
  2. 18 before the collision, 12 after the collision
  3. 12 before the collision, 9 after the collision
  4. 20 before the collision, 0 after the collision
Grade 9 :: Magnetism and Electricity by jlovering
Grade 9 :: Heat Transfer by der1228
Friction causes kinetic energy to be converted into
  1. potential energy.
  2. thermal energy.
  3. mechanical energy.
  4. electrical energy.
Grade 9 :: Simple Machines by jlovering
If a machine has a mechanical advantage less than one, which of the following must be true:
(Think carefully)
  1. The Effort Force is less than the Resistance Force
  2. The Effort Distance is greater than the Resistance Distance
  3. The Effort Distance is less than the Resistance Distance
  4. The Effort Force and Resistance Force are the same.
Grade 9 :: Heat Transfer by CianKelly
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 :: Waves and Sound by zvolanem
The pitch of a sound depends on its
  1. frequency
  2. resonance
  3. amplitude
  4. intensity
Grade 9 :: Waves and Sound 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 :: Waves and Sound by erinann02
The pitch of a sound depends on its
  1. amplitude
  2. elasticity
  3. density
  4. resonance
  5. frequency
Grade 9 :: Waves and Sound by erinann02
Frequency is measured in
  1. Yards
  2. Hertz
  3. Meters
  4. Decibels
Grade 9 :: Waves and Sound by zvolanem
A sound wave is an example of a:
  1. Transverse Wave
  2. Longitudinal Wave
  3. Primary Wave
  4. Secondary Wave
  5. Ocean Wave
Grade 9 :: Waves and Sound by erinann02
What is intensity measured in?
  1. Hertz
  2. Millimeters
  3. Decibels
  4. mph
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