Home Contents About this website Links Help How to use this website

Mike Tuke’s

A = activity, D = demonstration, E = experiment, Pa = paper exercise,TE = thought experiment. Should be done as I = individual, P = pair, G = group. min = minutes. F = further information.
printable version of this page
Making a depth gauge This is useful for measuring indentations such as the amplitude of ripple marks or the anterior groove of echinoids. Requirements Tyre tread depth gauge Piece of wood 20cm by 5cm by 2cm Drill a hole in the centre of the piece of wood so that the tyre depth tread gauge fits tightly into it and the bottom is flush with wood. The tyre gauge should read zero when the wood is resting on a flat surface. depth gauge
Earth Science Activities and Demonstrations