Practice Questions
1.Define the term static electricity
Static electricity is the build up of electric charges on the surface of an insulator.
2.Explain how some insulators can become electrically charged
When some insulators are rubbed together, electrons are transferred from one insulator to the other insulator.
The insulator that loses electrons will gain a positive charge. The insulator that gains electrons will form a negative charge.
3. Material X was rubbed against material Y. Material X gained electrons from Y.
State which material will have a
Positive charge overall: Material Y
Negative charge overall: Material X
Absorption and Emission of EM Radiation
JJ Thomson and Plum pudding model
Ernest Rutherford and the Nuclear Model
Niels Bohr changing the Nuclear Model
Discovering the Proton and Neutron
Measuring radiation from radioactivity
Radiation types and properties
Random nature of radioactive decay
Radioactive contamination or irradiation
Hazards of contamination and irradiation
Studies on the effects of radiation on humans
Different half lives of radioactive isotopes
Nuclear Fission Chain Reaction
Writing nuclear fission equations
Drawing ray diagrams for a concave lens
Drawing Ray Diagram to produce a virtual image for a convex lens
Drawing ray diagram to produce a real image for a convex lens.
Specular and Diffuse Reflection
Seeing Coloured Objects Part 2
Viewing objects through coloured filters
Transparent, Translucent and Opaque