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10 Cards in this Set
- Front
- Back
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Balanced Diet |
Fibre Carbohydrates Protein Water Calcium Iron Vitamins C&D Fats (saturated and unsaturated) •A balanced diet contains all the different nutrients in the correct amounts to keep us healthy |
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Teeth |
Canines used for tearing and ripping foodIncisors help bite off and chew pieces of foodMolars help you crush and grind food |
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Digestive System |
Starch -> Sugar Protein -> Amino Acid Fat -> Fatty acid & glycerol Ingestion is taking food into the mouth Digestion is breaking large insoluble particles into smaller soluble particles which can be absorbed into the bloodstream Absorption is the body's cells using nutrients Egestion is the removal of faeces from the body Peristalsis is a wave of musicale contractions moving food down the oesophagus. |
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Respiration |
Glucose + Oxygen -> Water + Energy + CO2Respiration takes place in every living cell |
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Smoking |
Tar - coats alveoli Nicotine - irregular heart beat Carbon Monoxide - stops oxygen being carried by red blood cells Passive Smoking - the harmful effects of smoking without actually smoking |
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Forces |
Forces can change the shape speed or direction of an objectFriction - Kinetic energy -> Heat energy + sound energyFriction is a force that opposes movement |
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Electricity |
Like charges repel Unlike charges attract Charged and uncharted attract A neutral object has equal numbers of protons and electrons Electrons are transferred when insulators are charged Protons have a + charge Neutrons have a = charge Electrons have a - charge |
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Heat |
Temp is how hot an object is Heat is a form of energyMatte black objects are the best at absorbing and emitting heat radiationMetals are good heat conductorsNon metals aren't good heat conductors |
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Physical and Chemical Changes |
A physical change can be reversed and doesn't make a new substance A chemical change cannot be reversed and therefore makes a new substance |
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Chemicals and Chemical Reactions |
Oxygen relights a glowing splint CO2 turns lime water milky Hydrogen burns with a squeaky pop Oxidation is where oxygen is added to a substance Thermal decomposition is using heat to break down a substance The chemical name for limestone is Calcium Carbonate Limestone quarrying can help build more things but causes air pollution |
