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Third Grade (Grade 3) Physics Questions

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Grade 3 Forces and Motion
What is the force that pulls objects to the center of Earth called?
  1. motion
  2. friction
  3. gravity
  4. acceleration
  5. force
Grade 3 Heat Transfer
The energy from the Sun is taken in by the body and changed to                 energy.
  1. heat
  2. light
  3. sound
  4. internal
Grade 3 Energy and Momentum
The energy from the Sun is an example of how light energy changes into                 energy.
  1. heat
  2. light
  3. sound
Grade 3 Waves and Sound
A form of energy that you can see. An example would be a lamp, burning matches, or the Sun. It is called                .
  1. chemical energy
  2. light
  3. sound
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 Simple Machines
Eric twists the cap to open the gallon of milk.
Gallon
Which type of simple machine is the milk cap?
  1. lever
  2. screw
  3. wedge
Grade 3 Energy and Momentum
Light from the Sun is converted into                 by plants.
  1. chemical energy
  2. heat energy
  3. motion energy
  4. waves
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
Grade 3 Magnetism and Electricity
If two magnets are arranged as shown, they will be attracted to each other.

Bar Magnets N SBar Magnets S N
  1. True
  2. False
Grade 3 Forces and Motion
An object in motion will stay in motion unless                      a force acts on it                     .
Grade 3 Waves and Sound
Light can be absorbed by                .
  1. the Sun
  2. matter
  3. rays
Grade 3 Simple Machines
A tool made up of more than two simple machines is called a                    Compound Machine                   .
Grade 3 Simple Machines
A tool with one or no moving parts that moves an object when you push or pull is called a                  Simple Machine                 .
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 Light and Optics
To take in some or all of the light that hits it means to          absorb         .
Grade 3 Simple Machines
Tyra uses this object to hold two boards together.
Screw
Which type of simple machine is the object?
  1. screw
  2. wedge
  3. wheel and axle
Grade 3 Light and Optics
When light passes through different materials at different speeds it is              refracting             .
Grade 3 Energy and Momentum
Energy we can see is                Light Energy               .
Grade 3 Waves and Sound
How loud or soft a sound is:          volume         .
Grade 3 Matter
It has a volume that stays the same, but it can change shape. What is it?
  1. gas
  2. solid
  3. mass
  4. liquid
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