<P></P><P>How can a potato be a battery?</P><P>How quickly will a shark find you?</P><P>What food should you take with you when climbing a mountain?</P><P></P><I><P>The Really Useful Book of Secondary Science Experiments</I> presents 101 exciting, ¿real-world¿ science experiments that can be confidently carried out by any KS3 science teacher in a secondary school classroom. It offers a mix of classic experiments together with fresh ideas for investigations designed to engage students, help them see the relevance of science in their own lives and develop a passion for carrying out practical investigations.</P><P></P><P>Covering biology, chemistry and physics topics, each investigation is structured as a problem-solving activity, asking engaging questions such as, ¿How can fingerprints help solve a crime?¿, or ¿Can we build our own volcano?¿ Background science knowledge is given for each experiment, together with learning objectives, a list of materials needed, safety and technical consi