Beams
Define Beams
A structural element that resists loads applied laterally across the beam's axis.
Define Forces.
An action that changes or maintains the motion ofa body or object.
What are three types of structures?
Natural
Manufactred
Shell
Mass
Frame
Why does a rock fall faster than a feather?
Because the air resistence opposes the pull of gravity, affects the feather more then the rock.
What is a Joint?
A joint is a point where 2 or more structures meet.
Name 3 types of beams.
Cantilevers
Braces
Truss
Fixed Beams
What type of force occurs when you crumple paper?
Compression
Name the 3 methods of designing a structure?
1. Distribute the load
2. Direct forces along angled components
3. Shape parts to withstand specific forces
How does gravity affect tides on earth
The Moon's gravity pulls on the water on Earth, causing the tides to rise and fall.
What are mobile joints
Joints that are able to move
What is the use of a I beam
It supports various structures
Name all internal forces
Compression, tension, shear, bending and torsion.
Define what the purpose of a keystone is (in a arch)
To spread out the load/ redirect forces
What is the center of gravity?
From where the weight from 2 sides is evenly distributed.
what are 2 joints that require heating up the material to join them together
welding
scoldering
What are beams called that are made of multiple materials.
Composite Beams
What are non-contact forces
Pulling objects toward eachothers with out physical contact.
What is the difference between a flying buttress and a normal buttress
Flying Buttress's reduce materials needed
What is gravity?
Gravity is the force of attraction that pulls objects with mass towards each other.
What is the purpose of fixed joints?
Fixed joints allow provide structural support
What is the use of a cantilever beams
enables the creation of overhanging structures without the need for additional support points
Desribe how air resistence affects the motion of a falling object.
Air resistence is a force that slows down the falling object, Ex: Feather
what is a natural and frame structure
spider webs, coral, trees, and skeletons
How does gravity keep planets in orbit?
Gravity pulls planets towards the sun, but the planets are also moving at there own speed that lets them stay in a curved path away from the sun.
Name the 5 types of rigid joints
Fasteners
Interlocking Shapes
Ties
Adhesives
Melting