Presentation on theme: "Year 6 Revision booklet1 One sheet per topic Mind map, note or questionnaire type form Some links to the internet For a general revision site go to:"— Presentation transcript:
Year 6 Revision booklet1 One sheet per topic Mind map, note or questionnaire type form Some links to the internet For a general revision site go to:
Year 6 Revision booklet2 Interdependence & Adaptation Thick White Fur for camouflage and warmth 6A Sharp Claws for digging burrows and catching fish Streamlined body for strong swimming Polar bear adaptations Plants make oxygen and use carbon dioxide Animals make carbon dioxide and use oxygen Plants and animals are interdependent Plants need : Oxygen, heat and water to germinate, to grow they also need light (to make their food) and nutrients for strong growth Adapting to the environment increases an organisms chance of survival A Food Chain shows what eats what. (The arrow shows into whose mouth the food goes.) Grass Rabbit Fox A Food Web is many connected food chains
Year 6 Revision booklet3 Micro-Organisms Microbes or Germs (bacteria & viruses) Word List: Bacteria- Tiny living organism Virus- Tiny organism which causes smallpox (which was cured by a Edward Jenner using a vaccination) Germ- General term for bacteria or Virus 6B All Micro-organisms do MRSGREN ( Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition) Microbes are tiny! 10 or 20 would fit onto the very tip of a needle! Good microbes: Make beer, wine, cheese & yoghurt Bad microbes Cause flu, tooth decay, chickenpox and food poisoning Yeast is a micro-organism. For yeast to perform its life processes, it needs water, warmth and food (sugar). We make dough rise by the carbon dioxide produced by when yeast respires.
Year 6 Revision booklet 4 6C More About Dissolving Stir, grains of sugar into hot tea for a quick sweet drink! INCREASE SPEED INCREASE AMOUNT Reduce grain size Stir Increase Temp’ YYYYYY NNYNNY Factors which affect how solids dissolve Dissolving is a Physical (Reversible) Change It creates a mixture. You can separate mixtures using: Coloured dyes- Chromatography (each colour separated) Insoluble solids/ liquid – Filtration (gets the solid) Soluble solids/ liquid – Evaporation (gets the solid) Soluble solids/ liquid – Distillation (gets the liquid) Many liquids mixed – Fractional distillation (eg Crude oil) To see how changes of state occur, go to: Making a salt (solute) & water (solvent) mixture by dissolving table salt (sodium chloride) in water. The result is a clear colourless SOLUTION. Sand is insoluble in water and can be removed from water by filtration. To separate salt & sand mixture : 1.Add water to mixture – salt dissolves 2.Filter –removes insoluble sand 3.Evaporate – removes water 4.White salt is left behind! A copper sulphate (solute) & water (solvent) mixture is a clear blue SOLUTION.
Year 6 Revision booklet5 6D Reversible & Irreversible Changes Physical (Reversible) Changes Evaporation: Liquid Gas Condensation: Gas Liquid Melting: Solid Liquid Freezing: Liquid Solid Subliming: Solid Gas Subliming: Gas Solid Dissolving solid into a liquid Chemical (Irreversible) Changes Burning or Combustion Cooking Neutralising (vinegar & bicarbonate) A process making new substances with new properties ( e.g. Solid + Liquid makes a gas, or 2 liquids mix and change colour!) The Fire Triangle Fuel Heat Oxyge n Word List REVERSIBLE: Able to be changed back to the way it was before IRREVERSIBLE: Cannot be changed back to the way it w as before. BURNING: To set something on fire (combustion). This is also oxidation as oxygen from the air is necessary for burning. DISSOLVING: When a solid substance ‘disappears’ in a liquid SEPARATION: A method used to sort materials which have somehow become mixed up. Fire is an irreversible change
Year 6 Revision booklet6 6E Thrust Forces in Action Air resistance Weight Friction Thrust = Friction = Constant speed Thrust > Friction = Speeding up Thrust < Friction = Slowing Down Weight Upthrust Heavy ocean liners float because the upthrust from the weight of water displaced equals the weight of the liner! Time (secs) Speed (m/s) Graph showing how Nessie’s speed changes when she falls out of a plane reaches a constant speed (220m/s) and then her parachute opens so she slows down to 30m/s! Nessie Forces can only: 1 Change a thing’s direction 2 Change a thing’s shape 3 Slow a thing down 4 Speed a thing up Forces are measured in Newtons
Year 6 Revision booklet7 6F How We See Things The sun is the major LIGHT SOURCE. Other light sources are light bulbs and fire. Light is reflected off objects into our eye Light reflects best of shiny smooth objects like a mirror. In a mirror left appears right and vice versa. This is LATERAL INVERSION A B C C B A Mirror Light travels in straight lines with an arrow for direction Periscopes enable you to see above or below and uses two mirrors at 45° Transparent Translucent Opaque Shadows change as the object is moved nearer to or farther from the screen. Near the screen – dark, sharp shadows Near the candle – light fuzzy shadow Mirrors at 45°
Year 6 Revision booklet8 6G Electricity: Changing Circuits To see how you can affect the brightness of bulbs in a circuit go to: + A Series CircuitParallel Circuit One break in the circuit and the whole circuit stops working. More batteries mean brighter bulbs. Batteries last longer. One break may not stop the whole circuit from working. All the bulbs are the same better brightness. Batteries run out more quickly. You can turn the bulbs off separately. A A Series Circuit ‘A’ is smaller A Parallel Circuit ‘A’ is bigger Know your symbols Cells, Bulb, Ammeter Voltmeter, Switch (open), (closed) Resistor, Variable Resistor, Fuse Diode Electricity is a flow of charge +
Year 6 Revision booklet9 6GEnquiry into Environmental Issues How do I frame a question? What is a fair test? Why do I repeat an experiment several times? What measurements should I make? How should I record my results (table or graph) What type of graph (bar chart or line graph)? A Bar Chart A Line Graph Discontinuous variableContinuous variable