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Seventh Grade (Grade 7) Mechanics Questions

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Grade 7 Forces and Motion
Marco and Janice are playing tug of war. Marco is pulling at a force of 10 Newtons South. Janice is pulling with a force of 12 Newtons North. What is the likely outcome of this tug of war battle?
  1. 2 Newtons of force, North, Janice is winning
  2. 2 Newtons of force, South, Marco is winning
  3. 22 Newtons of force, North, Janice is winning
  4. 22 Newtons of force, South, Marco is winning
Grade 7 Forces and Motion
The strength of the force of gravity depends on
  1. the masses of the objects and their speeds.
  2. the masses of the objects and the distance between them.
  3. the weight of the objects and their speeds.
  4. the masses of the objects and their weights.
Grade 7 Energy and Momentum
Stored energy is called kinetic energy.
  1. True
  2. False
Grade 7 Energy and Momentum
What is the other name for heat energy?
  1. kinetic energy
  2. thermal energy
  3. potencial energy
  4. electromagnetic energy
Grade 7 Energy and Momentum
The ability to do work is                .
  1. force
  2. energy
  3. pulley
Grade 7 Energy and Momentum
A(n)                 converts mechanical energy to electrical energy.
  1. molecule
  2. atom
  3. electricity
  4. generator
Grade 7 Fluid Mechanics
Fluid pressure is always directed                  .
  1. upward
  2. downward
  3. sideways
  4. in all directions
Grade 7 Forces and Motion
Marco and Janice are playing tug of war. Marco is pulling at a force of 10 Newtons South. Janice is pulling with a force of 12 Newtons North. What would be the likely outcome of this tug-of-war battle?
  1. 2 Newtons of force, North , Janice is winning
  2. 2 Newtons of force, South, Marco is winning
  3. 22 Newtons of force, North, Janice is winning
  4. 22 Newtons of force, South, Marco is winning
Grade 7 Fluid Mechanics
Why will a helium-filled balloon float in the air?
  1. There is more air than helium.
  2. Helium is less dense than air.
  3. Helium is as dense as air.
  4. Helium is more dense than air.
Grade 7 Energy and Momentum
When energy changes from one form to another it is called                               .
  1. energy transformation
  2. energy shifting
  3. electromagnetic transformation
  4. Law of Conservation of Energy
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