2022/23_CHS_Physics Practical Notes

1 Name: ( ) Class: 3 - Catholic High School 2022 Level 3 Physics Practical NOTES No. Contents Pg I Singapore-Cambridge General Certificate of Education Ordinary Level (2018) (Syllabus 6091 - Physics) 1 II Introduction to Physics Practical Experiments 6 III Physics Practical Experiment Skills 7 IV Physics Practical Experiment Notes 8 V Physics Sample Graph Plotting 23

2 (I) Singapore-Cambridge General Certificate of Education Ordinary Level (2018) (Syllabus 6091 - Physics)

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7 (II) Introduction to Physics Practical Experiments Basic safety procedures It may appear to some people that doing Physics practical experiments is less dangerous than doing Chemistry or Biology experiments. This is a serious misconception. Doing any experiment in the laboratory can be dangerous if we do not follow some basic safety procedures. Below are some basic safety procedures that we should be aware of. Before you begin 1. Make sure that your workbench is not full of unnecessary things (such as school bags, files, clothes and books). 2. Read all the instructions and check that the apparatus provided on the table match those in your worksheets before you do anything. 3. Look out for any possible dangerous procedures. While you are doing the experiment 1. Follow the directions in the worksheet closely. Do not do anything you are not instructed to do without your teacher’s permission. 2. Do not fool around and endanger yourself or the people around you. 3. Wear or use protective devices that are provided for you. These include goggles, gloves and safety tongs. 4. Never leave heating apparatus unattended. Turn off Bunsen burners and gas when you have to leave your workbench for a while or when you have finished your experiments. 5. If you have broken any glassware (eg. beakers, test tubes and thermometers) or spilt anything, inform your teacher immediately. You may have to help in cleaning up. 6. Be aware of where the fire extinguishers are located in the laboratory. After you have finished the experiment 1. Clean up your workbench. 2. Do not dispose of materials in the sink unless you are instructed to do so. 3. Wash your hands thoroughly. The above are only some of the safety procedures that you should take to avoid accidents. It is not possible to list all the safety procedures. The best preventive measure to take is to always be careful and be alert. Take care of yourself and your neighbours.

8 (III) Physics Practical Experiment Skills For practical experiments, always bring 1. A blue or black pen 2. A sharpened pencil (with sharpener) or mechanical pencil (with spare pencil lead) 3. A 30.0 cm clear plastic ruler (do not assume that the lab will provide a ruler) 4. Flexible curve 5. Calculator 6. Eraser During practical experiments, you will develop the following experimental skills: 1. 2. Carry out techniques, use apparatus, and handle measuring d