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 Non-removable: taking the linked parts apart will damage the object (aka “permanent” link)
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…)
Complete: no movement between the linked parts Partial: there can be movement between the linked parts
Rigid: there is no bending between the linked parts Flexible: one of the linked parts can bend without breaking the object
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.
What is Energy? ? https://www.youtube.com/watch?v=MpKZuhilzR4
Class work Refer to pages 396 and 397 in your text book. Complete pages 20-21 in your workbook.
Explain how the energy is transformed in each example shown: 1. Wind turbines
2. Electric mixer
3. Car motor
4. Light bulb
5. Eating food
6. Solar panel
7. Radio
8. Roller coaster
9. Elastic
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.