Good Science Victorian Curriculum Year 7

More documents

Recommendations

Info

INVESTIGATIONS Investigation 3.4 Yeast as a decomposer KEY SKILL IDENTIFYING THE INDEPENDENT, DEPENDENT AND CONTROLLED VARIABLES The independent variable is the one thing that you purposefully want to change in an investigation. The dependent variable is what you will be measuring. The controlled variables are all the things you need to keep the same throughout the investigation. Hint #1: Brainstorm with a partner three things that will be or were kept the same in your investigation, these will be the controlled variables. AIM To investigate the action of yeast as a decomposer MATERIALS • pieces of banana, cut to 1 cm thickness • sachet of active yeast • 4 Petri dishes with lids • water • tweezers • marker pen • hand lens METHOD 1 Using tweezers, place a piece of banana in each Petri dish. Add 1 mL of water to each dish. 2 Place the lids on two of the Petri dishes. Label one of these as ‘no yeast, cold’ and the other as ‘no yeast, warm’. 3 Open the yeast sachet and sprinkle equal amounts of yeast evenly over the banana in the remaining two Petri dishes. 4 Place the lids on these two Petri dishes. Label one as ‘yeast, cold’ and the other as ‘yeast, warm’. 5 Place the two Petri dishes labelled ‘warm’ in a warm place chosen by your teacher, and the two labelled ‘cold’ in a cold place chosen by your teacher. 30 min 6 Make and record a prediction about what will happen to the contents of each Petri dish over the next five lessons. 7 Record observations for each Petri dish over the next five lessons. Use a hand lens to look at the Petri dishes containing yeast. QUESTIONS 1 Does decomposition happen faster in warm or cold conditions? 2 Where is the yeast getting oxygen and food from? 3 Some people have compost bins in their back yards to return nutrients into their vegetable gardens. How do compost bins prepare the nutrients? Why is this a benefit to a vegetable garden? 4 Often compost bins are black, have holes on the sides and contain earthworms. How do each of these features help decomposers? 5 Why was it important to use tweezers and keep the lid sealed during the investigation? DISCUSSION 1 What was the relationship between the independent and dependent variables? 2 You identified three controlled variables. How many more can you think of now that you have completed the investigation? CONCLUSION Copy and complete: ‘The results show that: (respond to the aim)’. Level 1 148 GOOD SCIENCE VICTORIAN CURRICULUM 7
INVESTIGATIONS Investigation 4.1 Compressing liquids and gases KEY SKILL EXPLAINING RESULTS USING SCIENTIFIC KNOWLEDGE When you write a formal investigation report there is always a discussion section that includes your analysis and explanation of the data you collected. This is where you get to explain your results by linking them to what you already knew about the science of what you are studying. Hint #1: You can use the following sentence stem to write about your results: ‘My data shows … and this makes sense because …’. 15 min QUESTIONS 1 What do the results tell you about the compressibility of liquids? 2 What do the results tell you about the compressibility of gases? 3 Use the particle model to explain your results. 4 How could you investigate the compressibility of solids using an ice cube? CONCLUSION Copy and complete: ‘The results show that: (respond to the aim)’. Level 1 AIM To investigate the compressibility of liquids and gases MATERIALS • plastic syringe • water • small beaker METHOD 1 Draw some water into the syringe so that it is about half full. 2 Hold your finger over the nozzle so that water cannot come out, then try to push in the plunger. Are you able to compress the water? Record your observations. 3 Empty the water from the syringe and pull the plunger back so that the syringe is half full of air. 4 Again, holding your finger over the nozzle, try to push in the plunger. Are you able to compress the air? Record your observations. 149
Page 1 and 2:
GOOD SCIENCE VICTORIAN CURRICULUM Y
Page 3 and 4:
GOOD SCIENCE VICTORIAN CURRICULUM Y
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
Page 11 and 12:
CHAPTER 1: SCIENCE SKILLS 3 SEE-KNO
Page 13 and 14:
CHAPTER 1: SCIENCE SKILLS 2 Get to
Page 15 and 16:
CHAPTER 1: SCIENCE SKILLS Get to kn
Page 17 and 18:
CHAPTER 1: SCIENCE SKILLS 3 Organis
Page 19 and 20:
CHAPTER 1: SCIENCE SKILLS 3 The ind
Page 21 and 22:
CHAPTER 1: SCIENCE SKILLS RESULTS T
Page 23 and 24:
Test tube brush Test tube Beaker Br
Page 25 and 26:
CHAPTER 2: CLASSIFICATION 3 SEE-KNO
Page 27 and 28:
CHAPTER 2: CLASSIFICATION 2 3 Livin
Page 29 and 30:
CHAPTER 2: CLASSIFICATION Keys iden
Page 31 and 32:
CHAPTER 2: CLASSIFICATION 2 Every s
Page 33 and 34:
CHAPTER 2: CLASSIFICATION 2 Inverte
Page 35 and 36:
CHAPTER 2: CLASSIFICATION 2 Seeds,
Page 37 and 38:
CHAPTER 2: CLASSIFICATION Figure 2.
Page 39 and 40:
CHAPTER 2: CLASSIFICATION 3 Bacteri
Page 41 and 42:
CHAPTER 2: CLASSIFICATION FINAL CHA
Page 43 and 44:
CHAPTER 3: ECOSYSTEMS 3 SEE-KNOW-WO
Page 45 and 46:
CHAPTER 3: ECOSYSTEMS 3 Decomposers
Page 47 and 48:
CHAPTER 3: ECOSYSTEMS Table 3.2 Org
Page 49 and 50:
CHAPTER 3: ECOSYSTEMS 3 Symbiosis i
Page 51 and 52:
CHAPTER 3: ECOSYSTEMS 2 3 Some micr
Page 53 and 54:
CHAPTER 3: ECOSYSTEMS 2 3 Removing
Page 55 and 56:
CHAPTER 3: ECOSYSTEMS 3 Reducing an
Page 57 and 58:
CHAPTER 3: ECOSYSTEMS Figure 3.16 T
Page 59 and 60:
CHAPTER 3: ECOSYSTEMS FINAL CHALLEN
Page 61 and 62:
CHAPTER 4: STATES OF MATTER 3 SEE-K
Page 63 and 64:
CHAPTER 4: STATES OF MATTER 2 3 The
Page 65 and 66:
CHAPTER 4: STATES OF MATTER 2 3 Sub
Page 67 and 68:
CHAPTER 4: STATES OF MATTER 2 3 Liq
Page 69 and 70:
CHAPTER 4: STATES OF MATTER 2 3 4 L
Page 71 and 72:
CHAPTER 4: STATES OF MATTER 2 3 Den
Page 73 and 74:
CHAPTER 4: STATES OF MATTER FINAL C
Page 75 and 76:
CHAPTER 5: MIXTURES 3 SEE-KNOW-WOND
Page 77 and 78:
CHAPTER 5: MIXTURES 2 3 Mixtures ar
Page 79 and 80:
CHAPTER 5: MIXTURES 3 4 Solutions a
Page 81 and 82:
CHAPTER 5: MIXTURES 2 3 Water is a
Page 83 and 84:
CHAPTER 5: MIXTURES 2 3 Filtration
Page 85 and 86:
CHAPTER 5: MIXTURES 2 Magnets are u
Page 87 and 88:
CHAPTER 5: MIXTURES 2 Distillation
Page 89 and 90:
CHAPTER 5: MIXTURES 2 3 A separatin
Page 91 and 92:
CHAPTER 5: MIXTURES 2 Sewage is pro
Page 93 and 94:
CHAPTER 5: MIXTURES 3 Oil spills ca
Page 95 and 96:
CHAPTER 5: MIXTURES FINAL CHALLENGE
Page 97 and 98:
CHAPTER 6: EARTH, THE SUN AND THE M
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106: CHAPTER 6: EARTH, THE SUN AND THE M
Page 111 and 112: CHAPTER 7: EARTH’S RESOURCES 23 S
Page 113 and 114: CHAPTER 7: EARTH’S RESOURCES 3 no
Page 115 and 116: CHAPTER 7: EARTH’S RESOURCES 3 Ro
Page 117 and 118: CHAPTER 7: EARTH’S RESOURCES 3 4
Page 119 and 120: CHAPTER 7: EARTH’S RESOURCES Figu
Page 125 and 126: CHAPTER 7: EARTH’S RESOURCES FINA
Page 127 and 128: CHAPTER 8: FORCES 3 SEE-KNOW-WONDER
Page 129 and 130: CHAPTER 8: FORCES 3 What would happ
Page 131 and 132: CHAPTER 8: FORCES 2 We can predict
Page 133 and 134: CHAPTER 8: FORCES 2 The direction o
Page 135 and 136: CHAPTER 8: FORCES 2 3 Kinetic frict
Page 137 and 138: CHAPTER 8: FORCES 2 Other forces in
Page 139 and 140: CHAPTER 8: FORCES Imagine a mattres
Page 141 and 142: CHAPTER 8: FORCES 3 On the surface
Page 143 and 144: CHAPTER 8: FORCES Figure 8.10 The f
Page 145 and 146: CHAPTER 8: FORCES 2 3 Pulleys redir
Page 147 and 148: CHAPTER 8: FORCES FINAL CHALLENGE 1
Page 149 and 150: INVESTIGATIONS KEY SKILLS Writing a
Page 151 and 152: INVESTIGATIONS Investigation 2.2 Su
Page 153 and 154: INVESTIGATIONS Investigation 2.6 Gr
Page 155: INVESTIGATIONS Investigation 3.2 Mo
Page 159 and 160: INVESTIGATIONS Investigation 4.3 Ex
Page 161 and 162: INVESTIGATIONS Investigation 4.5 Ex
Page 163 and 164: INVESTIGATIONS METHOD 1 Copy the re
Page 165 and 166: INVESTIGATIONS RESULTS 30 min Level
Page 167 and 168: INVESTIGATIONS Investigation 5.6A E
Page 169 and 170: INVESTIGATIONS Investigation 5.6C D
Page 171 and 172: INVESTIGATIONS Investigation 5.7B S
Page 173 and 174: INVESTIGATIONS Investigation 6.2 Mo
Page 175 and 176: INVESTIGATIONS 30 min Level 2 TO MO
Page 177 and 178: INVESTIGATIONS Investigation 7.1 Cl
Page 179 and 180: INVESTIGATIONS Investigation 7.3A D
Page 181 and 182: INVESTIGATIONS Investigation 7.4 Th
Page 183 and 184: INVESTIGATIONS Investigation 8.1 Pu
Page 185 and 186: INVESTIGATIONS Investigation 8.4 He
Page 187 and 188: INVESTIGATIONS Investigation 8.6 Me
Page 189 and 190: INVESTIGATIONS METHOD 1 Copy the re
Page 191 and 192: INVESTIGATIONS Investigation 8.9B I
Page 193 and 194: fractional distillation a method th
Page 195 and 196: INDEX Aboriginal and Torres Strait
Page 197 and 198: photosynthesis 30, 31, 36, 42, 109
show all

Good Science Victorian Curriculum Year 7

Create successful ePaper yourself

Delete template?

Save as template?