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

Sunday, 25 January 2015

The 25 biggest turning points in Earth's history

Level: Intermediate B1

Please click the 'Print Friendly' icon at the bottom of the page if you want to print this exercise.

How much do you know about the history of the Earth?

Here is an excellent article from BBC Earth looking the 25 most important events in our planet's history.

Read the article and then answer the following questions:

1) How old is planet Earth?
2) True or false: we know exactly when the first organisms appeared.
3) When are plate tectonics thought to have begun?
4) What are the two great evolutionary growth spurts?
5) When was the first mass extinction?
6) What was the name of the supercontinent 300 million years ago?
7) When did the first apes appear?

Answers below!


1) 4.5 billion years
2) False - nobody knows!
3) 3 billion years ago
4) The Cambrian Explosion and the Great Ordovician Biodiversity Event.
5) The Ordovician-Silurian

6) Pangaea
7) 25 million years ago

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