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Scenario 2: Engage in Argument from Evidence
With more families cooking from home, 3 engineers took it upon themselves to design pressure cookers to help speed up the cooking process of food. Pressure
cookers are simple in theory-they use a clamped lid to trap boiling liquids (100C) and increase the internal pressure and temperature of the system. This allows
food to be cooked faster and at higher temperatures. Importantly, pressure cookers come with a pressure gauge, to monitor pressure and a release valve if
pressures increase too much. Make a claim about which scientist has developed the most effective and safe design. Include evidence from the figures and make
references to thermodynamics and gas laws in your response.
Figure 2:
Material
Aluminum
Brass
Bronze
PVC
Polyurethane
Polystyrene
Tungsten
Melting Point
(°C)
659
927
913
75
90
100
3399
Figure 1: General Pressure Cooker
Pressure gauge
Figure 3: Pressure Cooker Materials
Scientist
Body Material
1
2
3
Aluminum
Aluminum
Aluminum
Release valve
Clamp Material
Tungsten
PVC
polyurethane
Clamp
Body
Pressure Gauge
Material
aluminum
PVC
No gauge
Release Valve
Material
tungsten
PVC
No valve
Internal Volume
8.OL
8.3L
8.1L