MetalsOnline version watch the video and answer the questions by Δανάη Κ. 1 Which metal is commonly found in its pure form in nature? a iron b gold c copper d aluminium 2 What is an ore? a A liquid metal b A type of metal c A tool for mining d A special kind of rock containing metal 3 How is metal extracted from ore? a By heating it in a furnace b By freezing it c By washing it d 4 What happens to metal when it is heated in a furnace? a It evaporates b It becomes a liquid c It turns into gas d It remains solid 5 Why do workers need special clothing when extracting metals? a To protect from the heat b To prevent rust 6 What can liquid metal be used to create? a Only coins b Various shapes like bolts and car parts 7 According to the video, which property of gold makes it unique compared to other metals? a Gold requires less heat to extract from its ore b Gold is more abundant in the Earth's crust c Gold can be found in its pure form in the ground d Gold is more valuable and sought after by humans 8 What is the main challenge in extracting metal from ore as described in the video? a The metal is hidden within the rock b The furnace cannot reach high enough temperatures
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