has different elasticity than the cartilage between the bones. Cartilage is designed to absorb more shock because it acts as a between the bones. It is flexible but strong, “cushion” supportive tissue. 3.15 plan, choose equipment or Relating to silicone... resources for and perform a Flexibility very flexible, soft and sticky – investigation to demonstrate Resistance to acid high resistance, does not change & – properties of silicone such as acid hardens slightly to stay together resistance, flexibility and Imperviousness to water high imperviousness, silicone is – imperviousness to water that not penetrated by water make it suitable for use in bionics Effect of body temperature hardens and sticks to itself – Independent variable: condition in which the silicone sample is subjected to Dependent variable: flexibility, acid resistance, water imperviousness Controlled variables: time, amount of silicone Silicone has the characteristics of being inert, flexible, water resistant, acid resistant, and easy to shape which makes it an optimal material for the use in bionics. 3.16 analyse secondary Comparison of stainless & titanium alloys; information to compare the strength of UHMWPE and metal “superalloy” OUTCOME 4: 4.6 Air enters the lungs when the chest cavity is expanded. To do perform an investigation to model the action of the diaphragm in this, the ribs are pulled outward & the diaphragm contracts & inhalation and exhalation moves downward. Air is exhaled when the muscles relax & the diaphragm moves up to its original position.
has different elasticity than the cartilage between the bones. Cartilage is designed to absorb more shock because it acts as a “cushion” between the bones. It is flexible but strong, supportive tissue. 3.15 plan, choose equipment or resources for and perform a investigation to demonstrate properties of silicone such as acid resistance, flexibility and imperviousness to water that make it suitable for use in bionics Relating to silicone... Flexibility – very flexible, soft and sticky Resistance to acid – high resistance, does not change & hardens slightly to stay together Imperviousness to water – high imperviousness, silicone is not penetrated by water Effect of body temperature – hardens and sticks to itself Independent variable: condition in which the silicone sample is subjected to Dependent variable: flexibility, acid resistance, water imperviousness Controlled variables: time, amount of silicone Silicone has the characteristics of being inert, flexible, water resistant, acid resistant, and easy to shape which makes it an optimal material for the use in bionics. 3.16 analyse secondary information to compare the strength of UHMWPE and “superalloy” metal Comparison of stainless & titanium alloys; OUTCOME 4: 4.6 perform an investigation to model the action of the diaphragm in inhalation and exhalation Air enters the lungs when the chest cavity is expanded. To do this, the ribs are pulled outward & the diaphragm contracts & moves downward. Air is exhaled when the muscles relax & the diaphragm moves up to its original position.
Senior_Science_Resources_-_Medical_Technology_Bionics_Experiments.docx