Coronavirus disease 2019

Coronavirus disease 2019 COVID-19 is a contagious disease caused by the coronavirus SARS-CoV-2. In January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. The symptoms of COVID‑19 can vary but often include fever,[7] fatigue, cough, breathing difficulties, loss Read more…

Motion

Content Scribble Scalar and vector quantitiesScalar quantitiesExamples of scalar quantitiesCalculations involving scalar quantitiesVector quantitiesExamples of vector quantitiesMotionMotion in a straight lineTypical speedsCalculations involving space, distance and timeDistance-time graphsAcceleration Scalar and vector quantities Scientists often make measurements. The physical quantities they Read more…

Genetics

Content Scribble Reproduction, the genome and gene expressionAdvantages and disadvantages of sexual and asexual reproductionMeiosisFrom DNA to genomesChromosomesGenesGenomeDNA structure and making proteinsThe structure of DNABase pairsProtein synthesisTranscriptionTranslationEffect of genetic variants on phenotypeVariation and the effect of mutationGenetic causes of variationEnvironmental Read more…

Waves

Content Scribble Properties of wavesParts of a waveWave period and wave speedPeriodSpeedTransverse and longitudinal wavesLongitudinal WavesDemonstrating longitudinal wavesTransverse WavesDemonstrating transverse wavesElectromagnetic WavesElectromagnetic spectrumRadio waves, microwaves, infrared and visible lightRadio wavesMicrowavesVisible lightUltraviolet, EM waves in medicine and ionising radiationUltravioletElectromagnetic waves in Read more…

Plate Tectonics

Content Scribble Terminology and definitionsConvection currentsThe structure of the EarthInner CoreOuter CoreLower MantleUpper MantleCrustThe spheres of the EarthLithosphereHydrosphereBiosphereAtmosphereTheory of Plate tectonics- evidence and mechanismsPlate boundariesDivergent BoundariesConvergent BoundariesSubduction zonesEarthquakes- causes, distribution and monitoringCauseTypes of FaultMeasuring EarthquakesDistributionVolcanoes – types, distribution and formationTypes Read more…

The Universe

Content Scribble StarsOur SunTypes of stars:Life Cycle of a StarGalaxiesTypes of galaxiesGalactic clusters and mergersGalaxy OriginsSolar SystemsFormation of the Solar SystemTerms and definitionsAULight YearGNebulaeThe Big BangThe Red Shift Effect/Doppler EffectChange of the understanding of the universe.Scientists involved in the study Read more…

Chemical Reactions

Reactants: Reactants are the starting substances in the chemical reaction. Products: Products are the substances produced in a chemical reaction. Conservation of Mass: Chemical equations show that atoms are conserved in the reaction; this is known as the conservation of Read more…

Late Ferry Analysis

In this poem, the plodding passage of an old-fashioned wooden ferry, as it’s moving across Sydney Harbour, late at night, is conveyed through the expressive use of a seemingly-arbitrary  four-line stanza (or ‘quatrain’). This stanza is used to break open Read more…