Physics Revision, year 11, Feb 2015 4.0 / 5 based on 2 ratings ? Physicsa range of different topicsGCSECCEA Created by: Rebekah136Created on: 22-02-15 15:36 1093726148 Across 1. the number at the top of an isotope (4) 3. what radioactivity is often called a helium nucleus (5) 4. how to find the distance on a velocity time graph (4) 8. how do you find the value of an equation on a graph (8) 10. where in our solar system,does fusion occur naturally (3) Down 2. what radioactivity is a wave (5) 3. this happens when a slow moving neutron hits a fast moving nucleus (8) 6. what happens if a radioactive nucleus is unstable. (5) 7. what particle has a positive charge (6) 9. a substance commonly used in nuclear reactors (7)
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