Internal Forces
What is internal force?
What is a force that acts within an object or structure
What is external force?
What is a force that acts on an object from the outside due to an interaction with another object/system
What property allows an object to temporarily change shape, like a rubber band?
What is elasticity
What is Newton’s first name?
What is Isaac
What type of force is exerted by pulling on a string or rope?
What is tension
What type of force is exerted on an object by a person or another object?
What is an applied force
What property causes permanent changes in an object’s shape, such as bending a paper clip?
What is plasticity
What is Newton’s third law?
What is for every action, there is an equal and opposite reaction
What force is exerted on an object that squeezes or compacts it?
What is compression
Which force opposes the movement of objects when they make contact with other surfaces?
What is friction
Popping popcorn would be a __________ change
What is permanent change
When does Newton’s third law apply?
What is applies to all interactions between objects
What term describes a force that pushes parts of an object in opposite directions?
What is shear
What is the force called that acts on an object when it is in contact with a compressed or stretched spring?
What is elastic/spring force
Boiling water would be a _____________ change
What is temporary change
What is an example of Newton’s third law? Why?
What is balloon car, rowing a boat, walking, bird flying, etc.
What is the twisting force called that affects an object?
What is torsion
What external force does hitting a baseball use?
What is applied force
What is plasticity: breaking glass, burning wood, etc. elasticity: pulling rubber band, bending ruler, etc.
Can action and reaction forces occur in isolation?
What is no, they occur in pairs