Tech

See Mediamax website for scans and saved files. http://www.mediamax.com/wjaskew/Hosted/Y7%20T1/technology

__Year 8, Autumn Term__

In Tech this term [Y7, Term 1] we have designed boxes and learned about everyday forces. We have also sat an exam and I scored 91%

__(Tech T2 and T3)__ We have made cakes and smoothies.

__Tuesday 28th November. Revision for test [on Tuesday] on folder content.__

__Notes:__ Frame structures: -can support thier own weight. -types of bridges

Shell structures:Tins or cans[cars planes] Natural structures:trees and plants Man made[planes buildings i.e] FORCES: Tension: pull force< >

Compression: squashing force [example] elaphant on a stool on the ground[strong compression] Torsion: Twisting force.i.e use a spanner to undo a nut. Equilbrium:[one force balanced by another] Shear: [cutting-use scissors to cut paper.][This force can be used for cutting and every day things like gardening] Bendind [buckling] [pipe cleaner] Mass structure: resists forces with its own weight Rivets:metal fixing devices wich holds metal together. Stiffness: resists bending. Cantilever: Beam supported by one end only. Shell structure: Made of sheet materials. Load: Force aplied to a structure[small amount>small car Large jet> Large amount Composite material:material made up of others. Beams should support the load and the compression.