Links and Guides worksheets

Transcription

1 Links and Guides worksheets 1. Identify the type of link being described in the statements below. a) characteristic of a link when at least one part can move independently of the other parts b) characteristic of a link in which the separation of the linked parts damages their surfaces or the linking component c) characteristic of a link that requires a linking component 2. Consider the link below between the doorknob and the door. Identify the characteristics of this link by checking the correct boxes. removable/ non-removable 3. True or false? a) If glue plays a role of a linking component in it is considered a direct link. b) A link can be both partial and flexible. C) A link can be both partial and complete. d) A complete link can never move once they are linked together. 4. Safety bolts like the one illustrated below are used to lock doors. What are the characteristics of the link between the bolt and the housing? Bolt Housing removable/ non-removable 5. During a family breakfast, you explain that there are three main types of guiding. You use the jar of peanut butter with its screw-on lid, the cutlery drawer, the refrigerator door and the kitchen scissors as examples. Which type of guiding does each of these objects demonstrate? a) jar of peanut butter b) cutlery drawer c) refrigerator door d) kitchen scissors 1

2 6. A- Choose the link between all the sections below. The diagram on the next page has the part names. B- The drawing below indicates two areas that guide the parts. For each area, name the guided parts, indicate the type of guiding involved and name the part which controls movement. 2

3 7. Football is a sport that requires a lot of equipment, including a helmet. Inside the helmet is a layer of flexible padding to protect the player s head. It is held in place with glue. What are the characteristics of the link between the padding and the helmet? Direct or indirect Rigid or flexible Removable or non-removable Complete or partial 8. Helmets are mandatory not only in football; they are also required in ice hockey. One of the differences between football helmets and hockey helmets lies in their wire face masks. The masks on hockey helmets can usually be raised, but not the masks on football helmets. Given that the mask is usually attached to the hockey helmet with two screws and two nuts, what are the characteristics of this link? Direct or indirect Rigid or flexible Removable or non-removable Complete or partial 3

4 Consider the link between the eraser below and the plastic-coated paper covering it. Identify the characteristics of this link by checking the correct boxes. Direct or indirect Rigid or flexible Removable or non-removable Complete or partial 9. For each picture below, name the 4 links associated with it. How the tab is linked to the can. How the paper is linked to the wall. SET GOALS How the tarp is linked to the metal bar. How the shower head (nozzle) is linked to the shower holder. 4

5 These are legs for a table or chair. How would the legs be linked to a table or chair. How the birdhouse is linked to the tree. 10. Look at the three objects below Nut Handle Lever 1 Rivet Ruler Square head Lever 2 For each of the three objects, name the type of guiding involved and identify the guiding component. Faucet: Pliers: Combination square: 11. When a house is under construction, builders often nail asphalt shingles to the roof. What are the links associated with this? 12. Cicrlce the linking component(s) used in the following situations: a) A cabinetmaker builds a table using a saw, hammer, wood, glue, and nails. b) The mechanic removes the damaged wheel by lifting the car with a jack and removing the screw and nut. c) A worker installs a ceramic floor by spreading glue with a trowel and then laying the tiles. 5

6 13. You have invented an object made of two pieces of rubber. One of the parts turns and the other stays immobile. The object is very practical because it can be carried in two bags. What are the four characteristics of the links of this object. 14. Give the 4 characteristics of each link below: A) B) 15. For each picture, put an arrow on the part which acts as the guiding control. A) B) 16. A weather vane is a device used to indicate the direction of the wind. You have made a weather vane like the one shown below. a- Specify what acts as a guiding control for the pencil when the weather vane is in operation. b- Indicate the type of guiding involved. straw cylinder base 6