Good Science Victorian Curriculum Year 7

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SCIENCE SKILLS 1.2 LABORATORY EQUIPMENT 1 Get to know common laboratory equipment By learning the names and uses of laboratory equipment, you can select and use the correct equipment for any investigation. Some of the most common equipment is shown here. Bunsen burner Electronic balance Brass/crucible tongs Dropper Thermometer Safety glasses Test tube Beaker Forceps Measuring cylinder Evaporating basin Wire gauze Conical flask Test tube brush Watchglass Bosshead and clamp Test-tube holder Retort ring Mortar and pestle Filter funnel Retort stand Scalpel Test-tube rack What are the uses of five pieces of common laboratory equipment? 6 GOOD SCIENCE VICTORIAN CURRICULUM 7
CHAPTER 1: SCIENCE SKILLS Get to know your light microscope 2 Figure 1.4 A light microscope can usually magnify samples by up to 400 times. Eyepiece The most common type of microscope in the school science laboratory is a light microscope. It allows you to study samples by shining a bright light through an extremely thin slice of material. The image is magnified by the microscope’s lenses, which you look through. The eyepiece of a light microscope already magnifies samples by ten times. The objective lens, which is found lower down and usually rotates, then magnifies samples by a further amount. To identify the total magnification, multiply the eyepiece magnification (10) by the objective lens magnification. Coarse focus Fine focus Arm Rack stop Stage clip Base Revolving hosepiece Objective lens Stage Condenser Illuminator SETTING UP AND USING A LIGHT MICROSCOPE 1 Place your microscope on the bench or table, making sure that it’s not too close to the edge and that the arm is facing you. 2 Plug your microscope in and turn it on. The illuminator (light) will come on. 3 Lower the stage as far as it can go, using the coarse focus knob. 4 Consider each of the rotating objective lenses. Often they are different colours and have the magnification written on them. 5 Start with the lowest magnification – this is usually 4× (four times). Your microscope eyepiece already has a 10× magnification on its own, so when coupled with the 4× eye piece, what you are looking at will be 40 times the actual size. 6 Carefully insert the microscope slide onto the top of the stage and hold it firmly under the stage clip. Position it so the object you need to see is in the middle of the stage. 7 Look through the eyepiece and slowly bring the stage upwards towards you, using the coarse focus knob. This can take some time and everything will look bright and fuzzy until you get a glimpse of the slide as it comes into focus. 8 When the slide is roughly in focus, use the fine focus to turn it into a clear image. 9 Increase the magnification by changing the objective lens to 10×, 20× or 40×. 10 40× is usually the highest available magnification and can be tricky to find and focus on. It can also bring the lens extremely close to the slide, enough to crack and break it – monitor this carefully. Figure 1.5 Microscope slides are usually made of glass and are very fragile – treat them carefully. 7
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Page 5 and 6: MAKE EVERY LESSON A GOOD LESSON
Page 7 and 8: Chapter 5 Mixtures . . . . . . . .
Page 9 and 10: VICTORIAN CURRICULUM SCIENCE LEVELS
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Page 23 and 24: Test tube brush Test tube Beaker Br
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CHAPTER 4: STATES OF MATTER 2 3 Sub
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CHAPTER 4: STATES OF MATTER 2 3 Liq
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CHAPTER 4: STATES OF MATTER 2 3 Den
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CHAPTER 4: STATES OF MATTER FINAL C
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CHAPTER 5: MIXTURES 3 SEE-KNOW-WOND
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CHAPTER 5: MIXTURES 2 3 Mixtures ar
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CHAPTER 5: MIXTURES 3 4 Solutions a
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CHAPTER 5: MIXTURES 2 3 Water is a
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CHAPTER 5: MIXTURES 2 3 Filtration
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CHAPTER 5: MIXTURES 2 Magnets are u
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CHAPTER 5: MIXTURES 2 Distillation
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CHAPTER 5: MIXTURES 2 3 A separatin
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CHAPTER 5: MIXTURES 2 Sewage is pro
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CHAPTER 5: MIXTURES 3 Oil spills ca
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CHAPTER 5: MIXTURES FINAL CHALLENGE
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CHAPTER 6: EARTH, THE SUN AND THE M
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CHAPTER 7: EARTH’S RESOURCES 23 S
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CHAPTER 7: EARTH’S RESOURCES 3 no
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CHAPTER 7: EARTH’S RESOURCES 3 Ro
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CHAPTER 7: EARTH’S RESOURCES 3 4
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CHAPTER 7: EARTH’S RESOURCES Figu
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CHAPTER 7: EARTH’S RESOURCES FINA
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CHAPTER 8: FORCES 3 SEE-KNOW-WONDER
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CHAPTER 8: FORCES 3 What would happ
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CHAPTER 8: FORCES 2 We can predict
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CHAPTER 8: FORCES 2 The direction o
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CHAPTER 8: FORCES 2 3 Kinetic frict
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CHAPTER 8: FORCES 2 Other forces in
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CHAPTER 8: FORCES Imagine a mattres
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CHAPTER 8: FORCES 3 On the surface
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CHAPTER 8: FORCES Figure 8.10 The f
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CHAPTER 8: FORCES 2 3 Pulleys redir
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CHAPTER 8: FORCES FINAL CHALLENGE 1
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INVESTIGATIONS KEY SKILLS Writing a
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INVESTIGATIONS Investigation 2.2 Su
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INVESTIGATIONS Investigation 2.6 Gr
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INVESTIGATIONS Investigation 3.2 Mo
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INVESTIGATIONS Investigation 4.1 Co
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INVESTIGATIONS Investigation 4.3 Ex
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INVESTIGATIONS Investigation 4.5 Ex
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INVESTIGATIONS METHOD 1 Copy the re
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INVESTIGATIONS RESULTS 30 min Level
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INVESTIGATIONS Investigation 5.6A E
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INVESTIGATIONS Investigation 5.6C D
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INVESTIGATIONS Investigation 5.7B S
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INVESTIGATIONS Investigation 6.2 Mo
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INVESTIGATIONS 30 min Level 2 TO MO
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INVESTIGATIONS Investigation 7.1 Cl
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INVESTIGATIONS Investigation 7.3A D
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INVESTIGATIONS Investigation 7.4 Th
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INVESTIGATIONS Investigation 8.1 Pu
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INVESTIGATIONS Investigation 8.4 He
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INVESTIGATIONS Investigation 8.6 Me
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INVESTIGATIONS METHOD 1 Copy the re
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INVESTIGATIONS Investigation 8.9B I
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fractional distillation a method th
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INDEX Aboriginal and Torres Strait
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photosynthesis 30, 31, 36, 42, 109
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Good Science Victorian Curriculum Year 7

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