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Posts tagged with earthquakes

New Math Model puts Earth into a Spin

May14

The centre of the Earth does not spin at a constant rate, new Australian National University research has found. The world-first conclusions – which used a new mathematical method to interpret earthquake waves from five decades – found the 1980s was a slow decade for inner core movement, while recent years had seen the strongest speed-up. Read […]

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What story is this graph telling?

June21

A great way to think about graphs is to ask students, “What story is this graph telling”. This is a better than saying, “Describe this graph information”, etc. So, what story do you think this graphic is telling about earthquakes in east and southern Australia?

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Aftershocks Update

May23

My sister has just got back from her visit to Christchurch, the New Zealand city affected by earthquakes (see earlier post). She informed me that, while visiting a friend, they felt a sizeable earthquake. She said that, “It sounded like thunder, then ‘bang’ as it hit the house.” She explained that afterwards, those who lived in […]

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Aftershocks and Probability

May20

My sister and her husband have just been visiting Christchurch, where a devastating earthquake destroyed much of the inner city and many lives were lost. Today, she was out of town when a force 4 quake hit the city, but she was back in town when another one struck. Then today we heard news of […]

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Another Quake in Indonesia

April12

  News today of another large earthquake off the Indonesian North West coast brought fear and panic to those living in low-lying areas. Fortunately, today’s earthquake was more of a horizontal movement than a vertical one – so only small tsunami of around 10cm resulted. H3 Maths has posted a few notes on the measurement of […]

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Christchurch Earthquake Pies Again

February25

Here is another use of the pie graph – this time for assessment of the buildings that need to be demolished, etc. in the wake of the Christchurch earthquakes in New Zealand. New Zealand is prone to many earthquakes each day, as it lies on the boundary of two large tectonic plates. Click on the […]

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