Grade 8 Technology (TVM)

What force is applied when a sponge is bent?

• Torsion only

• Tension and compression

• Shear only

• Static load

Why are triangles used in trusses?

• They look good

• They are decorative

• They provide strength and rigidity

• They are easy to build

What will happen if the centre of gravity is outside a structure’s base?

• It becomes more stable

• It remains unchanged

• It will topple over

• It will stretch

What type of gear system increases speed but reduces force?

• Worm gear

• Spur gear

• Gearing up

• Gearing down

What role does the idler gear play in a gear system?

• Increases torque

• Changes the direction of rotation

• Increases speed

• Stops the system

Which structure is formed naturally and made mostly from solid material?

• Sandcastle

• Cave

• Brick wall

• Dam

What is the main function of a shell structure?

• To span a gap

• To enclose and protect something

• To support a moving load

• To resist torsion

Which component spreads loads across columns in buildings?

• Column

• Beam

• Tie

• Arch

Which structural member is supported at one end only?

• Beam

• Cantilever

• Column

• Truss

What type of force is acting when something is being pulled apart?

• Compression

• Torsion

• Tension

• Shear