20766744
Descripción
Fichas por Jannat Abbas, actualizado hace más de 1 año
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Creado por Jannat Abbas
hace más de 4 años
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| Pregunta | Respuesta |
| 1.3 - Conducting investigations | By Jannat Abbas (◕‿◕✿) |
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What do you do before conducting an experiment?
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1. Research background info 2. Check if other people have already investigated this topic 3. Determine the question & hypothesis 4. Identify the 3 variables 5. Recognise potential safety hazards |
| Before writing a detailed description of the experiment, you need to answer some questions. What are they? | - How will the independent variable be changed? - How will the dependent be measured? - How will the others be controlled? |
| What is a fair test? | An experiment where only 1 variable is tested at a time. This makes sure that the results can be used to either support the hypothesis or not |
| What are the 2 groups in a fair test? | - Experimental group - Control group |
| What is a reliable experiment? | If it gives the same result every time it's performed |
| Reliability in an experiment can increase through repeat trials and replication. What are repeat trials? | It means repeating the experiment again and again to see if it reproduces the same results |
| What is replication? | It means conducting many forms of the SAME experiment at the same time, called replicates |
| How do you conduct a scientific experiment correctly? | The procedure must be reliable, and with enough detail so other scientists can use it as well. Also include a diagram of how the experiment was set up. |
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What is data?
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The values collected for the dependent variable during an experiment |
| What is to be done when taking a measurement? | - Check the measuring tools (does it read 0 correctly?) - Put your eyes at a 90°C angle to the scale - Check your measurement (is it correct?) - Check that your numbers are written in a consistent format |
| What is the word for "free of personal bias"? | Objective |
| What is the opposite of an objective? | A subjective |
| What are the 2 types of data? Describe them: | Qualitative: mostly uses words to describe. Quantitative: mostly uses numbers to describe. |
| What is continuous data? | Unlimited number of values in a measurement (e.g. temp. that might occur throughout the day) |
| What is discrete/discontinuous data? | Limited number of values in a measurement (e.g. days in a week - 7) |
| Thanks for watching ｡◕‿◕｡ |
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