Deformation & Fluid Pressure

Description

Explain forces associated with deforming objects (elastic and inelastic deformation), thermal expansion and contraction of materials, and how fluid pressure acts in all directions and increases with depth

Mastery Evidence

• ✓ Distinguishes elastic deformation (returns to shape) from inelastic/plastic deformation (permanently changed)
• ✓ Explains why bridges and railway tracks have expansion gaps
• ✓ Explains why pressure increases with depth in a liquid (e.g. why deep-sea divers need pressure suits)
• ✓ Gives an everyday example of thermal expansion causing a problem or being used usefully