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Third Grade (Grade 3) Mechanics Questions

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Grade 3 Energy and Momentum
Energy of moving objects such as parts of machines like a car. It is called                 energy.
  1. mechanical
  2. electrical
  3. chemical
Grade 3 Energy and Momentum
Which kind of energy flows through wires?
  1. light
  2. sound
  3. electrical
  4. mechanical
Grade 3 Forces and Motion
When two things are rubbed together, what kind of force does it produce?
  1. stuck
  2. pulling
  3. friction
Grade 3 Energy and Momentum
We all have energy, even when we are sleeping.
  1. True
  2. False
Grade 3 Forces and Motion
What does the word "position" mean?
  1. the speed of an object
  2. the location of an object
  3. the amount of space between objects
Grade 3 Forces and Motion
What are the two instruments that you use the force of pull to make music?
  1. accordion and guitar
  2. drums and piano
  3. guitar and drums
  4. piano and guitar
Grade 3 Forces and Motion
An object in motion will stay in motion unless                      a force acts on it                     .
Grade 3 Energy and Momentum
Energy always stays in the same form.
  1. True
  2. False
Grade 3 Forces and Motion
A girl rolling dough

Force:        push       
Applying Force:        girl       
Receiving Force:         dough        
Effect on Object Receiving Force:                       dough changes shape                      
Grade 3 Fluid Mechanics
What word tells how fast a liquid flows?
  1. transparent
  2. viscosity
  3. water
Grade 3 Energy and Momentum
A solar panel and a dam are similar because they both
  1. are made of metal.
  2. use solar energy.
  3. convert energy from one type to another.
  4. create energy.
Grade 3 Energy and Momentum
Which of the following BEST describes kinetic energy?
  1. Energy that is in motion
  2. Energy yet to be made
  3. Stored energy
  4. Used energy
Grade 3 Energy and Momentum
Kinetic energy is an energy that is in motion.
  1. True
  2. False
Grade 3 Forces and Motion
What does friction do to a piece of chalk?
  1. It explodes
  2. It melts
  3. It wears down
Grade 3 Fluid Mechanics
Which is an object that will float in water?
  1. Penny
  2. Rubber Ball
  3. Sponge
  4. Can of food
Grade 3 Forces and Motion
A baseball lies on the floor. On what instance it will move?
  1. When force acts on it
  2. When it was pulled by gravity
  3. When the area is dark
  4. It will not move at all
Grade 3 Energy and Momentum
Energy we can see is                Light Energy               .
Grade 3 Fluid Mechanics
Which one of these is an example of surface tension?
  1. Dropping little drops of water onto a penny to see a bubble of water form.
  2. Running into the water at the beach on a hot day.
  3. Peeling a orange for a snack.
  4. None of the above
Grade 3 Fluid Mechanics
An object that has high buoyancy floats.
  1. True
  2. False
Grade 3 Forces and Motion
A baseball lying on the floor will only move if it is pulled by gravity.
  1. True
  2. False
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