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Third Grade (Grade 3) Mechanics Questions

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Grade 3 Energy and Momentum
A form of energy that you can hear. An example comes from particles that vibrate. Sound moves in waves through air or water.
  1. light
  2. sound
  3. heat
Grade 3 Forces and Motion
What affects the distance an object travels?
  1. the amount of force used
  2. how long it takes to travel
  3. what time it is
Grade 3 Forces and Motion
                can either be a push or a pull.
  1. Friction
  2. Force
  3. Work
  4. Matter
Grade 3 Forces and Motion
The woman pushes the shopping cart. The cart rolls forward.
Pushing Force 3
Are the forces acting on the cart balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Forces and Motion
How do you know if an object has changed position?
  1. It is not visible anymore.
  2. It looks bigger.
  3. It is farther or closer from a reference point.
  4. It is on top of a reference point.
Grade 3 Energy and Momentum
A light bulb is an example of how electrical energy changes into                 energy. This is an example of how a wire in the bulb gets so hot that it glows brightly.
  1. heat
  2. light
  3. sound
Grade 3 Forces and Motion
The boy is pulling on a heavy wagon. The wagon does not move.
Pulling Force 3
Are the forces acting on the wagon balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Forces and Motion
The children are playing tug of war. They both pull on the rope. The rope moves to the left.
Pulling Force 1
Are the forces acting on the rope balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Energy and Momentum
What is energy that you can see?
  1. shadow
  2. open circuit
  3. absorb
  4. light energy
Grade 3 Forces and Motion
The soccer ball is on the ground. It is not moving.
Soccer Ball
Are the forces acting on the ball balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Energy and Momentum
Kinetic energy is the energy of motion.
  1. True
  2. False
Grade 3 Energy and Momentum
Gas is burned in a car engine. It is when a chemical energy changes into                 energy.
  1. mechanical
  2. heat
  3. electrical
Grade 3 Forces and Motion
Some students found a big rock blocking the pathway. What type of force can they use to move it?
  1. gravity
  2. magnetic
  3. push and pull
  4. wheel and axle
Grade 3 Energy and Momentum
                energy is energy that you can hear.
  1. Sound
  2. Light
  3. Mechanical
  4. Electrical
Grade 3 Forces and Motion
It would probably be easiest to ride a bicycle across                .
  1. gravel
  2. sand
  3. the grass
  4. a sidewalk
Grade 3 Forces and Motion
Quinn accidentally drops his glass of cider. Gravity pulls the glass toward the floor.
Fall - Hot Cider - Small
Are the forces acting on the glass balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Forces and Motion
The children are playing tug of war. They both pull on the rope, but the rope does not move.
Pulling Force 1
Are the forces acting on the rope balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Forces and Motion
The boy pushes the door. The door moves.
Pushing Force 2
Are the forces acting on the door balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Forces and Motion
An apple falls off a tree. The force of gravity pulls the apple down toward the ground.
Summer - Tree
Are the forces acting on the apple balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
Grade 3 Energy and Momentum
Plants use energy from the Sun to make food. This is when light changes to                 energy.
  1. mechanical
  2. chemical
  3. electrical
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