An example of an analogy used in public science discourse:
"The organic material which is being grown in the form of salt marsh plants, and the organic material that comes in with the tides, every time we get the laying down of sediment, on every tide, that is essentially being buried. So, tide in, tide out, we've got material being buried, and then we've got the growth of salt marsh plants through that material, and then we've got more sediment going on top, and so it's like building up a big cake, essentially, a big trifle of different layers."
Orlando Venn (Principal Project Manager for Coastal Wetland Restoration)
Orlando Venn (Coastal Wetland Restoration) was speaking on an episode of BBC Inside Science
Read examples of scientific analogies
Many examples of science analogies are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.