Newton
Properties
Forces
Internal
External
100
Newton's third law states...
For every action force, there is an equal and opposite reaction force
100
Elasticity is a property that enables ___________ changes.
Temporary
100
Define a force.
A push or a pull
100
True/False: Compression is an internal force.
True
100
The force that pulls objects towards Earth.
Gravity
200
Identify the action force and reaction force when someone is pushing on a wall.
200
Give an example of a material that shows plasticity.
Playdoh, cookie dough, etc.
200
Name a non-contact force.
Gravity, magnetism, etc.
200
Define internal force.
Forces that act within an object or structure
200
Define external force
A force applied from the outside
300
Newton's 1st law is also known as the law of ________.
Inertia
300
The ability of an object to return to its original shape after being stretched.
Elasticity
300
True or False: An unbalanced force doesn't affect motion.
False
300
What type of internal force happens when an object is twisted?
Torsion
300
When a rubber band is stretched and let go, this force helps it return to its original shape.
Spring/Elastic Force
400
The law that explains why a balloon car moves when the air rushes out.
Newton's Third Law
400
What does "plasticity" mean?
The ability of a material to be deformed and retain its new shape
400
Which of the following is a contact force?
- Gravity
- Friction
- Magnetic force
Friction
400
What internal force occurs when parts of an object slide past each other within the material?
Shear force
400
External forces cause ____________.
Internal forces
500
In a rocket launch, which force propels the rocket upward?
The reaction force. (The gas pushing downward is the action force)
500
True/False: The properties of materials affect the forces they can exert.
True
500
TOUGH ONE! What are the four fundamental forces of nature?
Strong nuclear, Weak nuclear, Electromagnetic, and Gravity
500
Give an example of a real-world structure where torsion is an important internal force to consider.
A bridge
500
Friction almost always causing which internal force?
Shear