3-PS2 Motion and Stability: Forces and Interactions
3-PS2-1
Plan and construct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.
3-PS2-2
Make observations and/or measurements of an object's motion to provide evidence that a pattern can be used to predict future motion.
3-PS2-3
Ask questions to determine cause and effect relationships of electric or magnetic interactions between two objects not in contact with each other.
3-PS2-4
Define a simple design problem that can be solved by applying scientific ideas about magnets.
Plan and construct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object.
- An unbalanced force on one side of a ball can make it start moving.
- Balanced forces pushing on the box from both sides will not produce any motion at all.
- Gravity is a force that pulls objects down.
3-PS2-2
Make observations and/or measurements of an object's motion to provide evidence that a pattern can be used to predict future motion.
- Motion with a predictable pattern could include a child swinging in a swing, a ball rolling back and forth in a bowl, and two children on a see-saw.
3-PS2-3
Ask questions to determine cause and effect relationships of electric or magnetic interactions between two objects not in contact with each other.
- An electric force could include the force on hair from an electrically charged balloon and the electrical forces between a charged rod and a piece of paper.
- A magnetic force could include the force between two permanent magnets, the froce between an electromagnet and steel paperclips and the force exerted by two magnets.
- Cause and effect relationships could include how the distance between objects affects strength of the force and how the orientation of magnets affects the direction of the magnetic force.
3-PS2-4
Define a simple design problem that can be solved by applying scientific ideas about magnets.
- Problems can include constructing a latch to keep a door shut and creating a device to keep two moving objects from touching each other.
Magnets 5 E Plan
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