Lesson T4.1.2

T4.1.2 Performance of structural elements Quiz: KS3 Design & Technology, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson T4.1.2, Performance of structural elements: 20 multiple choice questions for the KS3 Design & Technology (National Curriculum), Unit 4: Technical knowledge, written with Revision Ninja.

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The 20 questions

  1. What is the main purpose of a frame in a product or building?

    • To carry electrical current from the battery to the motor inside the product
    • To store food and drink at a steady temperature inside a container
    • To filter dust from the air before it passes into the room
    • To support loads and keep the shape of the product or building

  2. What is compression?

    • A sliding force that makes two layers of a material move past each other
    • A twisting force that turns one end of a material around its long axis
    • A squashing force that pushes the parts of a material together
    • A pulling force that stretches a material apart along its length

  3. What is tension?

    • A sliding force that makes one layer of a material shift over another layer
    • A pulling force that stretches a material along its length
    • A pushing force that squashes a material along its length
    • A bending force that makes one side of a beam shorter than the other side

  4. What is torsion?

    • A sliding force that causes a layer of a material to move across a fixed surface
    • A squashing force that pushes the particles of a material closer together
    • A twisting force that turns a material about its long axis
    • A bending force that makes one side of a beam shorter than the opposite side

  5. Which beam shape is most efficient at resisting bending?

    • A flat sheet laid on the ground, because it covers the greatest area of ground
    • A thin rod that is pointed at one end, because it is lighter than a flat beam
    • An I-section or hollow tube, because it places material far from the centre of the beam
    • A solid circular rod with the same outside size, because its outline is smooth

  6. What does triangulation do in a frame structure?

    • It makes the frame rigid, because a triangle cannot change shape without changing its side lengths
    • It makes the frame lighter by removing the joints that hold the frame together
    • It increases the area of the frame so that more paint is needed to cover it
    • It allows the frame to stretch and flex without breaking when a load is applied

  7. What is a cantilever?

    • A beam that is supported at one end only, with the other end projecting into space
    • A beam that is supported at both ends with a load placed in the middle of its length
    • A beam that is cut into several short pieces and then bolted together end to end
    • A beam that rests on a hinge so that it is free to rotate about one fixed point

  8. Why is corrugated cardboard stiffer than flat card of the same thickness?

    • Its wavy layer creates curved and triangular spaces that resist bending
    • Its surface is coated in plastic, which makes the card much harder to tear apart
    • Its wavy layer is made of heavier paper, which makes the card weigh more overall
    • Its layers are glued together so that the card allows more light to pass through it

  9. A shelf bracket made from a thin flat strip bends under load. What change would reduce the bending?

    • Making the strip thinner so that it uses less material and weighs less overall
    • Painting the bracket a darker colour so that it absorbs more light from the room
    • Reducing the number of screws that fix the bracket to the wall
    • Folding the edges of the strip into an L or channel shape to add stiffness

  10. A model bridge made from straight sticks and pinned joints sags. What change would most improve its strength?

    • Adding diagonal sticks to form triangles within the framework
    • Painting the sticks so that the model looks more attractive to viewers
    • Replacing every stick with a longer one so that the joints are further apart
    • Removing the diagonal sticks to reduce the total weight of the model

  11. A table leg must resist the compression from the weight of the table top. Which design choice is best?

    • A hollow or square tube wide enough to resist buckling under compression
    • A soft foam rod that compresses easily and then recovers its shape
    • A long thin wire stretched between two supports so that it stays taut
    • A flat sheet of foil folded only once along its centre line

  12. Which structure is an example of a shell structure?

    • A metal rod used as a support for a shelf in the kitchen
    • A straight rope tied between two posts to hold a washing line
    • An egg, which spreads loads over its thin curved surface
    • A wooden plank, which carries loads only along its length

  13. A plastic beam fails when a heavy load is placed in the middle. Which term describes this failure?

    • Shear failure, because the beam slid sideways along one plane under the load
    • Torsional failure, because the beam was twisted around its long axis by the load
    • Bending failure, because the beam deforms and breaks under a bending force
    • Colour failure, because the beam changed colour under the heavy load placed on it

  14. Why do designers add gussets at the corners of a box frame?

    • To reduce the amount of glue that is needed to join the wooden panels together
    • To strengthen the joint by creating triangles that stop the frame racking out of shape
    • To make the corners look decorative and different from the rest of the frame
    • To give a place where paint can dry before the frame is assembled together

  15. A student wants a lightweight but stiff chair seat. Which choice is best?

    • A flat sheet of thin metal with no supports, which bends under a sitter's weight
    • A solid block of soft foam, which compresses heavily under the weight of the sitter
    • A set of loose rods laid side by side with no fixing between them at all
    • A moulded plastic shell with ribs underneath, which spreads the load across its surface

  16. Why is a hollow tube often a better bicycle frame material than a solid rod of the same mass?

    • A tube gives more stiffness for its weight because its material is placed further from the centre
    • A solid rod is always weaker because it contains more material and therefore more weight
    • A tube is easier to paint because the hollow centre holds the paint on the inside
    • A tube is cheaper per metre because the hollow centre removes the need for any coating

  17. A flat sheet of paper is rolled into a tube. Why does this make it much stiffer?

    • Rolling the paper makes it transparent, so light can pass through the tube more easily
    • Rolling the paper changes its chemical structure and makes the paper harder to tear
    • Rolling the paper adds extra layers, so the paper becomes thicker and heavier overall
    • The rolled shape creates a deeper cross-section, so it resists bending much more strongly

  18. A horizontal beam supported at both ends carries a load in the middle. Which part is in compression?

    • The support points at each end, where the beam is pushed upwards by the load
    • The lower surface, which is stretched and pulled apart as the beam bends downwards
    • The upper surface, which is squeezed together as the beam bends downwards
    • The middle line of the beam, which carries no force at all under any load

  19. Why do designers choose stiff materials for a measuring instrument?

    • So the instrument can be bent into any shape without losing its printed markings
    • So the instrument can be cut into smaller pieces easily for storage in a drawer
    • So the instrument absorbs more energy when it is dropped, reducing the risk of breakage
    • So the instrument keeps its shape and calibration under load, giving accurate readings

  20. A shelf sags when it is loaded in the middle. Which change would most reduce the sag without adding much weight?

    • Changing to a thinner material of the same width and length as the original shelf
    • Adding a vertical strengthening rib or flange along the underside of the shelf
    • Painting the shelf a lighter colour so that it carries less load from the objects
    • Removing the supports at each end so that the shelf rests directly on the floor

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