18. The diagram below shows three flasks with three different liquids in each of them. hot water initial level of the liquid Liquid A Liquid B Liquid C The volume and temperature of the liquids in the flask are the same. All three flasks were placed inside a hot water trough. The level of the liquids increases. (a) (b) Why does the level of the liquids rises up? The liquids gain heat from the hot water, expand and move upwards Different liquids rises to a different level after heating. Explain the reason. Different liquids expand by different amounts when beated by the same temperature (c) Give one application of this expansion.