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Ninth Grade (Grade 9) Physics Questions

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Grade 9 :: Forces and Motion by wlemerson
Grade 9 :: Forces and Motion by on2pleroma
What is the invisible force of attraction between masses?
  1. remote-sensing
  2. free-fall
  3. gravity
  4. ultraviolet radiation
  5. ozone concentration layer
  6. none of the above
Grade 9 :: Forces and Motion by wlemerson
The amount of air resistance depends on the speed of a falling object and                                     
  1. the mass of the object
  2. gravitational pull of the Earth
  3. the time of day the object is falling
  4. amount of surface area of the object
Grade 9 :: Forces and Motion by wlemerson
An astronaut drops a hammer and an egg while standing on the surface of the moon. Which one will hit the surface first?
  1. the egg
  2. the hammer
  3. both will land at the same time
  4. neither, both will float off into space
Grade 9 :: Energy and Momentum by lisamarie137
Stored energy is called
  1. thermal energy
  2. kinetic energy
  3. mechanical energy
  4. potential energy
Grade 9 :: Energy and Momentum by erinferrari
Which of the following is not used to calculate potential energy?
  1. mass
  2. height
  3. gravitational acceleration
  4. speed
Grade 9 :: Energy and Momentum by Ddavis88
What is equal to the product of mass and velocity?
  1. inertia
  2. force of gravity
  3. weight
  4. momentum
Grade 9 :: Fluid Mechanics by jlovering
An object with a mass of 20 kg displaces a volume of fluid that weighs 200 N when placed inside. Will the object float or sink in the fluid?
  1. Trick question! A 20 kg object cannot displace 200 N of a fluid
  2. It will sink due to gravity being stronger
  3. There is not enough information to answer this question
  4. It depends on the type of fluid
  5. It will float due to the buoyant force being stronger
Grade 9 :: Forces and Motion by Smpayne
Power = Work x Time
  1. True
  2. False
Grade 9 :: Forces and Motion by jlovering
Which of the following does NOT require direction?
  1. Velocity
  2. Acceleration
  3. Force
  4. Speed
Grade 9 :: Fluid Mechanics by jlovering
Mahanna has a device which contains nitrogen gas. With it she can control the volume, temperature, and pressure of the gas. If she must keep one of those properties constant, which of the following CANNOT happen?
  1. The pressure and temperature increase while the volume stays constant
  2. The volume and temperature increase while the pressure stays constant
  3. The pressure and volume increase while the temperature stays constant
  4. The pressure increases but the temperature decreases while the volume stays constant
  5. The volume increases but the temperature decreases while the pressure stays constant
Grade 9 :: Fluid Mechanics by jlovering
Kameron increases the pressure of a gas being held at a constant volume in a metal cylinder. Which of the following could he expect to happen to the gas inside the cylinder?
  1. The molecules will collide less often with the walls of the cylinder
  2. The molecules will slow down
  3. The temperature will increase
  4. The gas will not change at all
  5. The temperature will decrease
Grade 9 :: Forces and Motion by Courtney_Nicole
An object with a mass of 1 kilogram on Earth
  1. has less mass on the Moon
  2. has the same mass on the Moon
  3. has more mass on the Moon
  4. weighs the same everywhere
Grade 9 :: Forces and Motion by Courtney_Nicole
Consider your book is at rest on a table. When you push it horizontally and it's on the verge of sliding, but still at rest, friction on the book acts in a direction that is
  1. opposite to your push
  2. the same direction as your push
  3. at right angles to your push
  4. in no direction until the book slides
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