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Ninth Grade (Grade 9) Physics Questions

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Grade 9 Matter
In what temperature range does water exist as a liquid?
  1. 1-50 degrees Celsius
  2. 0-100 degrees Celsius
  3. 50-100 degrees Celsius
  4. 34-86 degrees Celsius
Grade 9 Forces and Motion
A change in position is called                .
  1. motion
  2. displacement
  3. acceleration
  4. velocity
Grade 9 Forces and Motion
If an object is at rest, it experiences motion.
  1. True
  2. False
Grade 9 Forces and Motion
What is the formula for speed?
  1. speed=distance/displacement
  2. speed=time/speed
  3. speed=time/distance
  4. speed=distance/time
Grade 9 Matter
Which process occurs when fast-moving molecules in a liquid can escape and become a gas?
  1. Sublimation
  2. Condensation
  3. Evaporation
  4. Freezing
Grade 9 Forces and Motion
A push or pull that one body exerts on another is                .
  1. velocity
  2. force
  3. mass
  4. acceleration
Grade 9 Forces and Motion
The greater the inertia, the greater an object's                .
  1. speed
  2. mass
  3. velocity
  4. acceleration
Grade 9 Quantum Physics and the Atom
What is the mass of a proton or a neutron?
  1. 1 amu
  2. 2 amu
  3. 1 gram
  4. 0.34 amu
Grade 9 Waves and Sound
Which is the best description of the nature of light?
  1. Light always behaves like waves.
  2. Light always behaves like particles.
  3. Light sometimes behaves like waves and at other times like particles.
  4. Light never behaves like either waves or particles.
Grade 9 Heat Transfer
Thermal energy is measured in                .
  1. Joules
  2. N
  3. Celsius
  4. J/kg
Grade 9 Forces and Motion
An object will remain at rest if the forces acting on it are                .
  1. constant
  2. positive
  3. unbalanced
  4. balanced
Grade 9 Matter
Ice floats on water because
  1. of cohesion.
  2. ice has a higher density than water.
  3. its molecules are more densely packed than those in liquid water.
  4. its molecules are less densely packed than those in liquid water.
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