– Density & Measurement – What floats & what sinks – Desnisties of all states of matter – Density – Revision
20. Force
– Rotation as effect of force & Torque – Balanced and unbalanced state of moments – Atmospheric pressure & uses of pressure – Force & Pressure – Revision
21. Energy
– The concept of Work & Energy – Forms of energy & conversion – Applications & Revision
– Electricity as it meets us (household – Electrostatics & Types of Charges – Charging a body, detection of charge – Flow of charge – All about current – Electrostatics – Revision – Charging & Current – Revision