高二英語warmingup,speakingreading(更新版)
【正文】 ass and volume . Mass and volume . A less dense substance floats on a more dense substance . Water (1,000 kg/m3 ) 。 oil (less dense) . ◆ ◆ ◆ ◆ Para. 5 What is heat capacity ? The amount of energy it takes to raise the temperature of a substance one degree centigrade . What does heat capacity look like ? Energy and temperature . What are some examples of heat capacity ? Water’s heat capacity helps keep the earth’s temperature steady . ◆ ◆ ◆ Para. 6 What is ocean motion ? The movement of water caused by changes in salinity and temperature . What are different parts of ocean motion ? Density , temperature , salinity . How does ocean motion work ? more dense water sinks and pushes less dense water To the surface . ◆ ◆ ◆ 22nd, March World Day for Water is established on 22 December 1992. It is to remind everybody that we should try efforts to solve the sever water shortage to help make the difference. What can you do to make the difference ?
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