Introduction to yr7 science ppt

Introduction to yr7 science ppt

• 1.
  HAILEYBURY What is Science? Scienceis a process of investigating our world that is exciting and useful! Science is an ongoing human activity that has already produced a body of knowledge we all use. 1
• 2.
  HAILEYBURY How science works 2
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  HAILEYBURY 3 How Science REALLYworks!
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  HAILEYBURY 4
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  HAILEYBURY Is it Science? 5
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  HAILEYBURY What are someof the branches of Science? Biology is the study of living things Physics is the study of energy and forces and how object behave Chemistry is the study of matter, what substances are made up of and how we change them
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  HAILEYBURY Find out whatthese areas of Science investigate Areas of scientific study Astronomy Microbiology Biochemistry Geology Acoustics Botany Forensic psychology Marine ecology Pharmacology Seismology Vulcanology Entomology 7
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  HAILEYBURY Scientists Scientists use investigationto help us understand and explain the natural world. They test their ideas and collect evidence to help us understand and improve our world. They form a community that analyses and gives feedback on other scientists research. They don't always agree! 8
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  Making Observations •Using theireyes and ears, Scientists record what is happening. •Observations are recorded in a Results table.
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  INFERENCE A suggestion orEXPLANATION of your observations Example: Observation – I saw bubbles in the liquid Inference – A reaction is taking place that is producing a gas Observation – broken glass on floor, broken window Inference – someone threw a stone and broke the window
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  Hypothesis •An educated guesson what will happen, based upon previous observations and basic research. •It can be tested using an experiment. It must be testable. See the Science Buddies website for great directions on how to write a strong hypothesis.
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  Fair test • Allfactors that may affect the experiment need to be the same except for one. • These factors are called variables • You only change one variable at a time. The variable being changed is called the INDEPENDENT variable • All other variables are kept the same. These are called CONTROLLED variables. • The variable that is being measured is called the DEPENDANT variable.
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  VARIABLES INDEPENDENT 13 DEPENDENT This is thevariable you are investigating. This is the one that you physically control/ manipulate to see the effect on another variable. Example type of ball – as this causes the effect on how high is bounces. ‘ I’ changed it –’Independent”  This variable relies on the independent variable. It ‘depends’ on the other variables.  This one is the effect of the independent variable. – so this one changes on its own without us manipulating it.  You measure/observe this one.  Example – height of the ball – as this depends upon the type of ball used.
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  CONTROL • This isthe original test in the experiment - You keep this constant and you use this to COMPARE your results with. • Remember CONTROL = COMPARE. • It is a parallel experiment where everything is the same as the original experiment except the variable you change. • Example – plants and different amounts of salt could be compared to plants and water.
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  REPETITION AND RELIABILITY •Repeat experimentsminimum of 3 times in Science classes (although Scientists often do many more!) •Calculate an average. •The purpose of repetition is to reduce the effect of errors.
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  CONCLUSION Is a finalsummary bringing all the events of what happened together. In your conclusion you should: •Restate your Aim •Comment on the hypothesis •Summarise your results to carefully highlight patterns in your data •Relate your findings to what you have learnt about that topic