Forces & Reactions
A mechanical engineer is
What is a person who designs and builds machines that move or help us to work?
The human body part that is a good example of tension
What is the forearm?
Wood is not good for skyscraper material
What is because it can catch on fire, and break easily?
Simple machines
What are tools that help us do work more easily?
Compound machine is made of
What is two or more simple machines?
A force is a
What is a push or pull that makes something move or stop?
Compression is
What is when two forces are squeezing an object together?
The inner core of a skyscraper
The six simple machines
What are lever, wheel and axle, pulley, inclined plane, wedge, and screw?
Compound machines reduce
What is the amount of force needed?
Newton's first law states
What is an object will stay at rest or keep moving unless something makes it stop or change?
Tension is
What is when two forces are "pulling" an object apart?
What is the backbone of the building?
An inclined plane
What is a flat surface at an angle?
Compound machine can change
What is the direction of a force?
Newton's second law states
What is the more force you use, the more something will move?
Squares need
What is bracing?
The steel frames of structures are like our
What is ribs?
the four parts of a lever
What are lever arm, fulcrum, effort, and load?
Scissors
What is an example of a levers and wedge?
Newton's Third law states
What is for every action, there is an equal and opposite reaction?
Trusses handle both
What is tension and compression?
Provides a solid base on which a structure can rest
What is a foundation?
The pivot point of a lever
What is the fulcrum?
The lifting crane set did not include
What is an inclined plane, and a wedge?