Year9 Biology
Unit 1: Living organisms Unit 2: Nutrition, digestion and excretion Unit 3: Respiration and gas exchange Unit 4: Health and disease Unit 5: Reproduction Unit 6: Ecosystems and habitats Unit 7: Inheritance and genetics Unit 8: Humans and the environment Unit 9: Working scientifically
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Scientific studies can be biased; it's important to recognise when this is the case. Scientists review each other's conclusions from new research.
A conclusion sums up what has been found out during an investigation. It should be clearly structured and explained using scientific knowledge.
Different types of graphs and charts are used to show results. They need to be drawn and labelled correctly. Scientists use patterns in the data to reach a conclusion.
Types of data include continuous, discrete and categoric. Data can be presented in a number of ways, which depends on the type of variable and the uses.
Calculating averages from data is usually more accurate than using one result. Using a table ensures that data is recorded in an organised way.
Scientific equations and formulae are used to work things out in science. Using standard units means scientists around the world can work together better.
Developing a method is an important part of planning an investigation and it is important to evaluate the validity of each step leading up to the conclusion.
A hypothesis is an idea about how something works that can be tested using experiments. A prediction says what will happen if the hypothesis is correct.
Find out why variables are important in an experiment, including control variables, independent and dependent variables.
How can you work safely in the lab? What are the various steps needed in order to do so? How to spot risks, hazards and understand hazard symbols.