links in technical objects
DESCRIPTION
Links in Technical objects. A link is a fastening unit that attaches two parts of an object together Different types of links have different characteristics. Removable : the parts can be taken apart without causing damage to the object - PowerPoint PPT PresentationTRANSCRIPT
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Links in Technical objects
• A link is a fastening unit that attaches two parts of an object together
• Different types of links have different characteristics
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• Removable: the parts can be taken apart without causing damage to the object
Non-removable: taking the linked parts apart will damage the object (aka “permanent” link)
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• Direct: the parts “fit together” without a fastener, like puzzle pieces or Lego blocks
• Indirect: the parts need something to hold them together (like glue, a screw, a rivet…)
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• Complete: no movement between the linked parts
• Partial: there can be movement between the linked parts
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• Rigid: there is no bending between the linked parts
• Flexible: one of the linked parts can bend without breaking the object
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Types of Links and Guiding Controls
• Open your workbook to page 18-19. Complete the tables referring to textbook pages 392-394. Remember to describe the characteristics in your own words.
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What is Energy?
?https://www.youtube.com/watch?v=MpKZuhilzR4
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Class work
• Refer to pages 396 and 397 in your text book. Complete pages 20-21 in your workbook.
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Explain how the energy is transformed in each example shown:
1. Wind turbines
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2. Electric mixer
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3. Car motor
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4. Light bulb
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5. Eating food
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6. Solar panel
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7. Radio
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8. Roller coaster
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9. Elastic
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Energy Transformations
• https://www.youtube.com/watch?v=i6e-KrNCe_E
• Energy cannot be created or be destroyed. It can only change forms. Energy transformations can occur naturally in our world, or take place in technological systems that we build.
• Refer to p. 398-400 in your textbook and complete page 22 in your workbook.