What you learnt...Electricity is essential to many objects and items in our lives and an understanding of it is vital to scientists and engineers. You learnt about the dangers of electricity and the difference between static, current and mains electricity. You also looked at waves and saw how high frequency sound waves can be used in medicine and how high energy X-rays can be used to image broken bones. You also learnt about the atom and the radiation generated from unstable nuclei. Finally you looked at how atoms have been split and the attempts scientists are making to fuse atoms together.
What now...Select the topic you want to review from the menu and let's get started.
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The Lessons...P4.1: Electrostatics
P4.2: Dangers of Static Electricity P4.3: Using Static Electricity P4.4: Current and Resistance P4.5: Mains Electricity in the Home P4.6: Longitudinal Waves and Ultrasound P4.7: Uses of Ultrasound P4.8: Radioactivity P4.9: Radioactive Decay and Half-Life P4.10: The Changing Nucleus P4.11: Radiation Around Us P4.12: X-rays, Gamma Rays, and their Uses P4.13: Gamma Radiation and Medicine P4.14: More on Nuclear Power P4.15: Chain Reactions P4.16: Nuclear Fusion |