Structures and Force TOPICS 6-7

1. 1What is the force that resists or works against the movement of two surfaces rubbing together.

   1. AFriction
   2. BShear
   3. CCompaction
2. 2Stable means less likely to tip.

   1. AVerdadero
   2. BFalso
3. 3The material failure that occurs when you bend a disk enough to break it is......?

   1. AShear
   2. BTorsion
   3. CTension
4. 4The Center of Gravity is the point at which all of the gravitational force of an object may be considered to act.

   1. AVerdadero
   2. BFalso
5. 52 ways to stabilize a structure would be to build on a firm .................. and to balance the forces.

   1. AFoundation
   2. BFooting
   3. CPiling
6. 6Gravity is the kind of force that is in effect when a building starts to lean over.

   1. AVerdadero
   2. BFalso
7. 7A ........................ is a horizontal board or span supported by a very strong column at one end.

   1. AA Cantilever
   2. BA Footing
   3. CA Stabilization
8. 8A Footing is a large, cylindrical structure used to carry the weight of a structure to a solid foundation material.

   1. AVerdadero
   2. BFalso
9. 9What is the term for a concrete foundation beneath a house basement walls.

   1. AA Footing
   2. BA Piling
   3. CA Stable
10. 10A Gyroscope is a circular device with a heavy outer rim that spins at a very fast rate.

    1. AVerdadero
    2. BFalso

11. 11.................. .................... is the tendency of an object that is spinning on its axis to move in a predictable manner.

    1. ASpin Stabilization
    2. BSpin Exertion
12. 12The weight of a load acting on a structure would be an internal force

    1. AVerdadero
    2. BFalso
13. 13The weight of a structure itself would be an ........... force acting on the structure.

    1. AExternal
    2. BInternal
14. 14Friction would prevent a beam from sliding off of it's columns.

    1. AVerdadero
    2. BFalso
15. 15The ............. the friction between a fastener and the material into which it is driven, the less likely the fastener will slip out.

    1. AGreater/Faster
    2. BLess/Slower
16. 16Fasteners with rough surfaces can easily be driven into a structure but may just as easily become loose and fall out.

    1. AVerdadero
    2. BFalso
17. 17A cantilever must be able to withstand ............. forces on top.

    1. ATension
    2. BCompression
18. 18A cantilever must be able to withstand ...................forces underneath.

    1. Acompression
    2. Btension
19. 19The wavelike shape in the corrugated cardboard gives the cardboard strength

    1. AVerdadero
    2. BFalso
20. 20Guitars go out of tune when there is too little compression in their tuning pegs.

    1. AVerdadero
    2. BFalso
21. 21When an object falls the .............................. falls in a straight line.

    1. Acentre of gravity
    2. Bbalance of gravity
22. 22Pilings support the weight of many bridges and buildings.

    1. AVerdadero
    2. BFalso
23. 23Spreading the weight of the walls over a larger area reduces the stress on every part of the soil
    beneath them.

    1. AVerdadero
    2. BFalso
24. 24Heave is the upward movement of a foundation or slab caused by underlying soils that expand or swell. That's how a tilt in the sidewalk is created.

    1. AVerdadero
    2. BFalso
25. 25A failure to build the base to proper specifications will lead to eventual sinking and collapse of a driveway.

    1. AVerdadero
    2. BFalso
26. 26When the object is lined up with the force of gravity acting on the centre of gravity, the object
    is balanced.

    1. AVerdadero
    2. BFalso
27. 27When the object is not supporting the centre of gravity, the object
    begins to fall.

    1. AVerdadero
    2. BFalso
28. 28Friction helps hold the structure in place when the wind or other
    forces try to lift or tip it.

    1. AVerdadero
    2. BFalso
29. 29Brick walls are held together by friction

    1. AVerdadero
    2. BFalso
30. 30Friction resists against movement between two surfaces that rub
    together.

    1. AVerdadero
    2. BFalso
31. 31Friction can help keep pieces of the structure from moving apart

    1. AVerdadero
    2. BFalso
32. 32 Concrete and mortar have very low compressive strength if
    they are made according to the correct recipe.

    1. AVerdadero
    2. BFalso
33. 33Concrete becomes weak when it is pulled or sheared.

    1. AVerdadero
    2. BFalso
34. 34 rope and chain have high tensile strength when used for a swing.

    1. AVerdadero
    2. BFalso
35. 35Concrete is good for swings because it won't rot when the structure becomes wet.

    1. AVerdadero
    2. BFalso
36. 36Brittle structures and objects will bend easily when torsion is enforced.

    1. AVerdadero
    2. BFalso
37. 37Steel has neither tensile or compression strength

    1. AVerdadero
    2. BFalso
38. 38What methods to designers use to make a good, stable structure?

    1. ADistribute the load throughout the structure so that no single part is
       carrying most of the load.
    2. BDirect the forces along angled components so that the forces hold
       pieces together instead of pulling them apart.
    3. CShape the parts to withstand the specific type of force they are likely
       to experience.
    4. DAll of the Above (or Below)
39. 39Rectangular frames are probably the easiest to build. However, load forces can easily push or pull them out of shape.

    1. AVerdadero
    2. BFalso
40. 40................. shapes are much stronger than rectangles.

    1. ATriangle
    2. BCircle
    3. CSquare
    4. DNone of the Above (or Below)
41. 41Any structure with a load-bearing, horizontal beams supported only at the ends, may bend in the
    centre. This bending directs forces outward on the vertical beams.

    1. AVerdadero
    2. BFalso
42. 42The central stone in an arch is called a ....?

    1. AKeystone
    2. BMiddle stone
    3. CStructure stone
43. 43A cantilever is a horizontal board or span, supported by a very strong column at one end.
    Double cantilever bridges are very strong structures and support heavy vehicles.

    1. AVerdadero
    2. BFalso
44. 44......................... were used to make huge building in 1162. Nature still uses similar techniques.

    1. AFlying buttresses
    2. BSpringbank braces
    3. CCylindrical columns

Descripción

Test sobre Structures and Force TOPICS 6-7, creado por Mari Tempest el 23/05/2018.

Autor

Mari Tempest

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English

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grade 5

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