Science
Terms
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- Heart attacks:
- When the supply of blood and oxygen to an area of heart muscle is blocked, usually by a clot in a coronary artery
- Making of Glass:
- Made by mixing sand with lime and soda then heating the mixture to 2000 degrees. Forms long chain glass molecules like a liquid
- Law of Reflection:
- Reflected rays always leave a mirror at the same angle they hit
- Identification of Metallic properties:
- Lustre, Malleability, Ductility and Conductivity
- Tests to define minerals:
- Colour, Crystal Shape, Hardness, Streak, Density
- What is a keyword for Velocity?
- Vector (direction)
- Test for Lipids:
- Brown paper test - Turns brown paper translucent, Sudan 3 - Turns into a bright red solution
- Components of Food:
- Carbohydrates, Proteins, Lipids, Vitamins, Minerals and Water
- Uses of Food:
- Supplication of energy, Reparation of Tissue, construction of tissue
- Adaptions of living things - Plants:
- Water storage - Cactus and boab, Harvest of water from fog, Reduced surface area of leaves, Short life cycles
- Adaptions of living things - Animals:
- Leathery feet, Nocturnal, Water directed to mouth, Flush limbs with blood, Convert food to water
- Uses of Electromagnets:
- Electric Motors, Cassettes, Microwaves
- What is a test for Oxygen?
- Reignites a glowing match
- What is a keyword for speed?
- Scalar (no direction)
- Pure:
- Nothing else mixed in
- Test for Carbohydrates:
- Starch - In Iodine turns the solution black, Glucose - In Benedict's regeant turns the solution yellow or orange under heat
- What is a test for Carbon Dioxide?
- Turns limewater milky
- Whats is a test for Hydrogen?
- "Pop test" - goes pop when a lighted match is put to a test tube of hydrogen
- Issues with Obesity:
- Breathing and lung problems, Diabetes, Risk of cancer in rectum - colon - breast - cervix, Stroke, Heart disease, Gall bladder disease, Irregular periods
- Describe the structure of the Human Eye From surface to brain:
- Cornea, Pupil, Iris, Lens, Retina, Optic nerve, Brain
- Distinguish types of compounds:
- inorganic = non-living and no carbon, organic = living and carbon
- Formula for wavelength:
- Velocity = frequency * wavelength
- Plant intake of food:
- Light energy is trapped by plants to make the simple sugar glucose and the gas oxygen which contain energy stored in a chmical form. Then the plants assemble nutrients such as carbohydrates, protein and lipids. The energy stored in these nutrients can be unlocked through respiration.
- Introduced species history:
- Rabbits - brought over with the first fleet for hunting/farming, Cane Toads - brought in as a solution to the Cane beetle problem of the 1930s - from Hawaii
- Issues with Annorexia Nervosa:
- Irregular heart beat, Liver and Kidney damage, Anemia, Loss of Bone mass, Osteoperosis, Hypothermia, Swollen salivary glands, Periods stop
- Making of concrete:
- Made by mixing cement with sand, pebbles or gravel (aggregate) and then adding water. Water hardens the mixture (Hydration)
- Adaptions to Bushfire:
- Plant seeds germinate after heat treatment, banksias germinate after smoke treatment, Eppicomic roots for rapid regeneration, Thick bark such as Iron bark
- Atom:
- Only one solitary atom
- Newtons third law and an example of it:
- Every action has an equal and opposite reaction
- Strokes:
- Burst blood vessel in brain
- Who was Volta?
- The man who discovered Electricity in circuits
- What is respiration?
- glucose + oxygen = carbon + water + energy dioxide
- What are proteins?
- Long chains of amino acids
- Circulatory system:
- Consists of Heart, Blood and Blood vessels
- Functions of the Circulatory system:
- Blood is pumped around the body by the heart and carries nutrients, oxygen and wastes around the body
- Test for Proteins:
- Turns blue Biuret solution to pale purple
- Molecules:
- More the one atom
- Community:
- A natural unit consisting of plants, animals and micro-organisms in an area functioning without all abiotic factors of the environment such as mountains
- Who was Galvani?
- A man who discovered an electric current when metal applied to forgs legs
- Human intake of food:
- Food travels down the small intestine and nutrients are absorbed in the villi
- Ecosystem:
- A natural unit consisting of plants, animals and micro-organisms in an area functioning with all abiotic factors of the environment