Deformation & Fluid Pressure
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
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Deformation & Fluid Pressure means practising the idea at the table with a simple hands-on check. We will demo once, then your child tries.
Materials: A small toy car or ball; A ramp or book stack and a ruler. 1. Say the goal of Deformation & Fluid Pressure in plain words once. 2. Adult gives one gentle push and one stronger push, then compares how far the object travels. 3. Child tries three push or pull trials and records which force made a bigger change. 4. Fresh check: one fresh push/pull comparison. Record and stop. Done: three recorded trials with a clear force comparison. Proof: parent note of examples and results. Stop: End after the fresh check; keep optional challenge for another day.
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Start practiceDeformation & Fluid Pressure practice
Practice key ideas from Deformation & Fluid Pressure.
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Learning resources
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PhET Interactive Simulations · Practice link — not the full lesson
Under Pressure
Before you open · source notes
Under Pressure supports hands-on exploration for Deformation & Fluid Pressure. Not every lab worksheet.
Free interactive page, no sign-in required for the tested path.
Before you openAsk the learner what they changed in the sim or page and what they observed.
Opening this link does not save learning or assess mastery.
Source, access and review notes
Public PhET Interactive Simulations page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
PhET Interactive Simulations. “Under Pressure.” External page; Gakuva does not copy, host, embed, or redistribute materials.
Unknown — link only
Check understanding
- 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
“If your child noticed the lid on a jar was very tight, could they explain why running it under hot water helps — and what's happening to the metal as it heats up?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- Forces & Motion
- Age range
- Ages 12–13
Standards