interpret data in order to propose a hypothesis based on an irregular pattern observed over time in the Universe and in nature using, for example:the behaviour of unstable isotopes Looking for patterns: behaviour of unstable isotopes Not all observations and measurements allow a scientists to see an immediately obvious pattern. Sometimes it takes considerable time to gather enough data to be certain a pattern is there at all. However, once the data is collected it becomes possible to propose a hypothesis to explain the pattern that has been detected. Aim: to examine data collected from observations and measurements on a given phenomenon (radioactivity), and determine if a pattern can be detected that can form the foundation of an explanatory hypothesis. Radioactive decay is the spontaneous radioactive disintegration of an atomic nucleus, resulting in the release of energy. Some atoms are stable while others are unstable and decay, emitting radiation to achieve a stable state. The emissions from an unstable atom's nucleus, as it decays, can be in the form of alpha, beta or gamma radiation. Strong Nuclear Force o The stability of the nucleus depends on the ‘balance’ between the strong nuclear force which binds the protons and neutrons together, and the repulsive force of the protons.\ o As the atomic number increases (atomic number = number of protons), more neutrons are needed for stability.\Nuclei with more than 83 protons are all unstable, and will eventually break up into smaller pieces; this is known as radioactivity. This diagram shows me that: Notes: An isotope is: This diagram shows me that: interpret data in order to propose a hypothesis based on an irregular pattern observed over time in the Universe and in nature using, for example:the behaviour of unstable isotopes 1. Highlight relevant pieces of information on this graph (5 things). 2. Discuss with the person next to you what you think this graph is showing. 3. Propose and WRITE DOWN a relevant hypothesis to explain this data. 4. Where could you find out if your hypothesis is correct?