Radiation and Cooling Investigation
Physics, Heat and Gases, Age 14-16
Outline of an experiment to test the affect of different materials on the cooling rate of a beaker of water. It includes a revision of types of variables, things to consider when planning an investigation, an example results table and concluding slide.
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1To investigate how different materials affect radiation. Teachable.net 2009. Some rights reserved.
http://teachable.net/res.asp?r=21792Learning Objectives You should learn :
About different types of variables
How to identify them when doing your practical work.3Revision of variables4Revision of variables Summary:The independent variable is the one that you change or select.
The dependent variable is the one changes as a result and that you measure.
The control variables must not change so that it is a fair test.5Types of variables
There are 4 other types of variables that you may meet.
Their names are:
Categoric
Ordered
Discrete
Continuous6In summary Categoric
These have word labels.
Ordered
These categoric variables can be ranked in an order.
Discrete
These can only have whole number values.
Continuous
These can have any numerical value.7To investigate how different materials affect radiation. AIMS
to compare the absorption of radiation by different materials.
8/other material9Points to ConsiderWhat are we going to measure?
What do we need to stay the same?
What are we going to change?
Why do we need a lid
