GR 8 NATURAL SCIENCES STATIC ELECTRICITY WORKSHEET (QUESTIONS & ANSWERS) static electricity, lightning, thunder, electron, proton, neutron, charges, When two objects are rubbed together, electrons are transferred from one object to the other. One object becomes positive and the other negative. A non-contact force exists between charged objects.

Gr 9 NATURAL SCIENCES WORKSHEET 1 (25 pages)(FINAL EXAM REVISION QUESTIONS & ANSWERS) Topics: This PAPER includes 27 pages. First 13 pages only has questions and next 14 pages with answers. Students can solve the questions and then check their answers. Questions include; Matter and Materials - Elements and compounds - The Periodic Table- Names of compounds - CHEMICAL REACTIONS- ELECTRIC CELLS AS ENERGY SYSTEMS-

GR 10 PHYSICS (WORK AND ENERGY) WORKSHEET 1 (QUESTIONS AND MEMORANDUM) WORK AND ENERGY, Gravitational Potential Energy: The energy of an object due to its position in a gravitational field relative to some reference point (base level) Kinetic Energy: The energy of an object due to its motion Mechanical Energy: The sum of the gravitational potential energy and the kinetic energy of a system. The Law of Conservation of Energy: Energy cannot be created or destroyed. It can be transformed one type to another. Total energy in the system remains constant. The Law of Conservation of Mechanical Energy: The total amount of mechanical energy, in a closed system, remains constant.