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Ninth Grade (Grade 9) Physics Questions

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Grade 9 Forces and Motion
Which of the following is not an example of a force?
  1. Tension
  2. Weight
  3. Friction
  4. Mass
Grade 9 Matter
The process by which a liquid becomes a gas is               .
  1. evaporation
  2. condensation
  3. sublimation
  4. diffusion
Grade 9 Energy and Momentum
Walking converts what type of energy into mechanical energy?
  1. chemical
  2. electromagnetic
  3. nuclear
  4. thermal
Grade 9 Energy and Momentum
Fossil fuels currently account for the majority of the world´s energy use because they are                                             .
  1. distributed evenly throughout the world
  2. nonpolluting
  3. relatively inexpensive and readily available
  4. renewable energy resources
Grade 9 Waves and Sound

This question is a part of a group with common instructions. View group »

Wave energy relates directly with frequency. Which of the following types of radiation has the greatest amount of energy?
  1. radio
  2. gamma
  3. ultraviolet
  4. microwave
Grade 9 Forces and Motion
Which of the following types of motion is predominant in the molecules of a gas sealed in a tube?
  1. rectilinear
  2. random
  3. circular
  4. oscillatory
Grade 9 Waves and Sound
A sound wave with greater intensity sounds higher.
  1. True
  2. False
Grade 9 Heat Transfer
Which law of thermodynamics supports the statement that the entropy of a system at absolute zero is zero?
  1. Zeroth law of thermodynamics
  2. First law of thermodynamics
  3. Second law of thermodynamics
  4. Third law of thermodynamics
Grade 9 Waves and Sound

This question is a part of a group with common instructions. View group »

In the visible spectrum, the color                 has a lower frequency than the color                .
  1. orange; green
  2. blue; yellow
  3. yellow; red
  4. violet; blue
Grade 9 Forces and Motion
Which of the following is an example of a pulling force?
  1. dragging a dog sled
  2. throwing a baseball
  3. hitting a golf ball
  4. slamming the car door
Grade 9 Light and Optics
Which of the following is not true about the brightness of light?
  1. The measurement of the amount of light output in a given area.
  2. The measurement of light output at a given time.
  3. The brightness of light is different at different distances from a light source.
  4. The power of the light source affects the brightness of light.
Grade 9 Forces and Motion
Which of the following is the reason for banking of racing tracks?
  1. To obtain greater speeds
  2. To prevent side-slip
  3. To maintain vertical equilibrium
  4. To prevent frictional forces
Grade 9 Energy and Momentum
One watt equals one                 .
  1. newton
  2. newton-meter
  3. meter per second
  4. joule per second
Grade 9 Heat Transfer
The first law of thermodynamics states that
  1. components of a system interact.
  2. the entropy of a closed system always increases.
  3. a closed system always shifts toward disorder or homogeneity.
  4. energy is always conserved.
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