Welcome! This site is for students to practice their English and keep up to date with environmental issues.

You can find a mixture of reading, crosswords, videos and short English lessons: these will normally be vocabulary, but I may also treat you to some grammar!

There are now over 260 lessons on this blog. Look through the Blog archive, Post labels and Popular Posts to find what you want.

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''Let nature be your teacher''
William Wordsworth, poet, 1770-1850

''Joy in looking and comprehending is nature's most beautiful gift''
Albert Einstein, physicist, 1879-1955

''... to find the word, or words, by which [an] idea may be most fitly and aptly expressed''
P.M. Roget, lexicographer, 1779-1869

Wednesday, 11 December 2013

How is fog formed? Video lesson 24

Level: Intermediate / B1

Please click the 'Print Friendly' icon below if you want to print this exercise

Here is a great, short (two-minute) video from BBC Weather explaining how radiation fog forms.

Watch the video and then answer the following questions:
1) True or false: you normally need low pressure for fog to form
2) Which two crucial mechanisms are needed for fog to form?
3) What happens to the heat in the soil when the sun goes down?
4) What happens when the dew point of the air matches the temperature of the air?
5) What can make the fog disappear again?

Answers below!

1) False: you normally need high pressure
2) Clear skies, light wind
3) It radiates away
4) Fog forms
5) The sun coming out and heating up the air

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