Monday, 11 November 2019

The perfect fracking fluid

Recipe for the perfect fracking fluid: make your own fluid to fracture hydraulically (frack) methane-bearing shale


This activity examines the hydraulic fracturing method and the purposes of the different constituents of the fracking fluid.
More Earthlearningideas about the extraction of oil and gas can be found on our website.

Monday, 4 November 2019

Plate driving mechanisms

The new ELI published today is "‘All models are wrong’ – but some are really wrong: plate-driving mechanisms. Many textbook diagrams of plate-driving forces have arrows in the wrong places".

This activity offers a strategy for teaching that all models are simplifications, and that these can be wrong when superseded by better evidence-based models, Many diagrams in textbooks show mantle convection to be the main driving force behind the movement of tectonic plates, through arrows showing convection currents throughout the mantle. However, evidence from seismic tomography and from the speed of plate movement related to the area of plates and the length of plate margins, shows that slab-pull and ridge-push mechanisms are more important drivers for most, if not all plates.
Many more activities related to plate tectonics can be found on our website by using the search engine or the alphabetical index.



Monday, 28 October 2019

Earthquake in your classroom

Have you tried the Earthlearningidea 'An earthquake in your classroom; a classroom earthquake intensity scale'?


“Earthquakes don’t kill people; buildings do.”
This activity helps pupils to visualise what experiencing an earthquake of different intensities might be like. With some classes, it will need careful management!
Many other earthquake related activities can be found on our website.


Monday, 21 October 2019

What colour was the world in the past?

The new Earthlearningidea today is "What colour was the world in the past? Using rock evidence and ‘the present is the key to the past’ to colour the geological world".

This activity involves a discussion, using the colours of unweathered surface rocks and ‘the present is the key to the past’ to give a coloured picture of past geological worlds.
More teaching ideas about the Earth in the past and about uniformitarianism can be found by referring to the Geological Time category or by using the search engine or alphabetical index on our website.

Monday, 14 October 2019

How a rising mountain chain can reveal its hidden secrets

“Hooray and up she rises!*" How a rising mountain chain can reveal its hidden secrets

Modelling how erosion of the top of a mountain range is accompanied by isostatic uplift, eventually exposing rocks, once hidden deep below.
Many activities about mountain building and isostasy can be found by searching our website.
* From "The Drunken Sailor" sea shanty

Monday, 7 October 2019

Climate on arrival

Our new ELI today is 'Climate on arrival: if you suddenly arrived somewhere – what would tell you what the climate was like?'


This activity involves looking for features with your class that might be indicators of the current climate. After the activity the pupils can describe features of their local environment, noting not only natural aspects (vegetation) but also human influences (buildings, clothes). They can also explain the connections between the clues they have identified and the local climate.
Other activities related to environments can be found on our website by using the search engine or the alphabetical index.

Monday, 30 September 2019

Ammonites in the sea

'How did ammonites adjust their position in the sea? - The ups and downs of ammonites'

This clever demonstration shows how some animals which are buoyant in water can change their depth in the sea.
More activities relating to fossils can be found in the Evolution of Life category on our website.
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