Monday, 24 October 2016

What's the difference between porosity and permeability?

Our new ELI just published is 'Does my rock hold water and will water flow through it?' This activity investigates the differences between porosity and permeability.

The activity can be used in any science or geography lesson where the ability of rocks to hold water or hydrocarbons is being discussed.
There are two activities for your pupils to try and, because they involve chocolate and LegoTM, they are very popular with children!
Related ideas about porosity and permeability can be seen on our website.

Monday, 17 October 2016

How thin is the crust we live on?

You can answer the question 'Just how thin is the crust we live on?' by trying this Earthlearningidea - 'Journey to the centre of the Earth - on a toilet roll'

We seldom stop to consider the true scale of many features of the Earth. This activity aims to enable pupils to visualise the thickness of the crust in relation to the rest of the Earth. It also helps them to appreciate the difference in depth between the oceanic crust and the continental crust. It introduces the terms ‘lithosphere’ and ‘asthenosphere’ to help in understanding plate tectonic theory.
Many more activities about the structure of the Earth and about plate tectonics can be found on our website.

Tuesday, 11 October 2016

Use the view of your local area to tune yourself into the local geology

Our new ELI published yesterday is 'The view from the site'. Use the view from any viewpoint, to ask the questions provided. These will help your pupils to pick out any landscape-scale evidence for the local geology and its structure.

All the ‘lumps and bumps’ of a landscape are either natural or the result of human activity; larger features can only be natural. This activity uses these features as clues to the underlying geology and geological structure. The photographs used in the activity focus on inland features but at the coast the link
between the coastal features and the geological structure is even clearer.
This activity could be extended to include erosional features such as river, glacial and fault-bound valleys and also depositional features such as fenland and tidal flats.
Pupils always enjoy being out of school and this activity is great fun.

Monday, 3 October 2016

Why should I recycle my mobile phone?

A popular ELI in September was the last in our 'Be a mineral expert' series - 'Recycle your mobile (cell) phone.'
This activity is based on an information sheet, which prompts pupils to think about the materials and energy which go into the manufacture and use of a mobile phone, and why they should consider carefully what happens to the phone when its useful life is over.
Other activities about minerals can be found on our website.

Monday, 26 September 2016

Questions to ask about recording geological data

Today's new ELI is 'Questions for any rock face 14: recording - what questions about recording geological data might be asked at any rock exposure?'

Pupils should consider if the site were to be filled in or destroyed, in what ways could the geological information be recorded for future use? Many methods could be used. The pupils then need to think about which of the ways they have identified would be best and why. Lastly, where should the records be held?
This activity completes our series of questions to ask at any rock face. Previous ELIs and many more concerned with fieldwork can be found on our website.

Monday, 19 September 2016

Using cross-bedding to find the directions of ancient currents

Following on from the post of 5th September about cross-bedding and 'way-up' structures, we now have an ELI about using cross-bedding to find the directions of ancient currents. 'Sedimentary structures - cross-bedding and ancient currents'

Cross-bedding is a common feature of sedimentary rocks. The formation of cross- bedding can be seen in modern depositional environments and then related to similar structures in sedimentary rocks – an example of using the present to help us to understand the past. Cross-bedding can be used as part of prospecting in the minerals or hydrocarbon industries.
Many more activities about sedimentary structures can be found on our website.

Monday, 12 September 2016

Questions to ask about potential for quarry re-opening

Today's new ELI is 'Questions for any rock face 13: quarry economics; what questions about potential for quarry re-opening might be asked at any rock exposure?'

Take your pupils to an abandoned quarry and ask the series of questions provided to help them to understand the economics of exploiting raw materials.
At the end of the activity pupils can:-
- carry out arithmetical calculations;
- describe the potential uses of quarry materials;
- describe the economic potential of a quarry site;
- debate the issues around the re-opening of an old quarry.
Many more ideas for fieldwork can be found on the Earthlearningidea website.