Mission﹕Weather forecast by glass

[2015.04.29] 發表

【明報專訊】The mixture in the storm glass was developed by Robert FitzRoy, an English Royal Navy officer and meteorologist (氣象學家) who lived in the 19th century. It was used on the voyage he took together with the famous naturalist Charles Darwin (達爾文).

Fill in the following blanks with the correct forms of the following words.

mix / forecast / grow / contain

A storm glass is a weather (1)____________ device that is composed of a sealed glass (2)____________ filled with a liquid. The appearances of the liquid were supposed to indicate weather changes, but modern scientists have confirmed they only reflect temperature and air pressure changes.

The liquid in the glass is a (3)____________ of distilled water and several chemicals. Crystal (4)_____________ in storm glasses is usually due to chemical reactions of the liquid caused by temperature changes.

■English highway-words and collocations

If a thing is composed of certain parts or members, it is made or formed from them.

e.g. (a) Water is composed of hydrogen and oxygen.

(b) The committee is composed of teachers.

■Vocab Cards

Collect them all!

monsoon (n) 季候風

break (v) 打碎

extreme (adj) 極端的

thermometer (n) 溫度計

■Glossary

voyage (n) 航行

sealed (adj) 密封的

indicate (v) 表示

chemical reaction (n) 化學反應

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