Showing posts with label Quarks. Show all posts
Showing posts with label Quarks. Show all posts

Friday, 16 April 2010

Volcanic ash stops flights

Der isländische Vulkan schleudert weiter Asche in die Luft, allerdings mit etwas weniger Kraft. Man kann die Aschwolke nicht sehen, aber viele Flughäfen sind geschlossen. Die Aschepartikel sind eine Gefahr für Flugzeuge, weil sie sich auf den Triebwerksschaufeln festsetzen kann.

If you want to discover more about volcanoes then you might like Der Quarks Vulkan which has a simulation of a volcano and answers questions such as:

Warum sind manche Vulkane explosiv und andere kaum?
Was hat die Zusammensetzung des Magmas mit der Explosivität zu tun?
Welchen Einfluss haben die vulkanischen Gase?
Was ist ein Schild- und Schichtvulkan?

You can also watch the video of the whole Quarks broadcast about volcanoes and test your knowledge  with the 8 questions in the Quarks-Vulkane-Quiz

Sunday, 28 February 2010

Earthquakes

Earthquakes - Erdbeben - and other natural disasters have been in the news rather too often in recent months. When you are learning German it's often useful to be able to talk about such things - their affect on people and their causes.

jetzt.sueddeutsche.de carries an interesting article about the earthquake in Chile Trümmer, Schreie, Verzweiflung. It looks like reality caught up with a Chilean reality show. There is also criticism of the liberalisation of building regulations in Chile.

All the German newspaper websites are reporting this earthquake which has left hundreds dead. There are also fears of a tsunami in the Pacific, particularly as there was another quake centred near Okinawa, the southern most Japanese island. I suspect we'll be worrying about the affect on copper production since Chile produces more than a third of the world's copper. The following quote about the Pacific ring-of-fire is from FAZ and you can view their report here

Chile liegt am sogenannten „Pazifischen Feuerring“, einem hufeisenförmigen Vulkangürtel am Rande des Pazifiks. Etwa 90 Prozent der Erdbeben weltweit ereignen sich innerhalb des Feuerrings.

Coverage in Spiegel online includes some information in the sidebar about die Richterskala and Erdbebenwelle (Tsunami) and they have a forum where you can discuss Tsunamis - sind wir richtig gerüstet?

Quarks & Co the science series from WDR Fernsehen has covered Erdbeben in the past. You can download a PDF file from the broadcast in 2008. The video Erdbeben – wenn die Erde zuschlägt is a 60MB download. I found these broadcasts very accessible and well presented. Having the PDF file means you can look up any unfamiliar vocabulary. For anyone wishing to explore the science a little more than try the Geoforschungszentrum Potsdam which has English as well as German pages.

Friday, 5 February 2010

Is there anybody out there?

Not a question about why there's been no comments but that age-old speculation about whether extra-terrestrial life might one day be discovered. I tend to be open minded on this question but I am fascinated about how modern telescopes are beginning to find planets outside our solar system. This is well covered in the latest episode of Quarks & Co

Mit immer leistungsstärkeren Teleskopen blicken Wissenschaftler in den Himmel – getrieben von der großen Frage: Gibt es eine „zweite Erde“, gibt es vielleicht sogar Leben im All? Inzwischen haben sie über 400 Exoplaneten entdeckt – Planeten außerhalb unseres Sonnensystems. Quarks & Co begibt sich auf eine faszinierende Reise ins Universum und erklärt, wie man die Wahrscheinlichkeit von fernen Zivilisationen „berechnen“ kann.

You can access all the Quarks videos here - the one I'm talking about is Exoplaneten – Die Suche nach der zweiten Erde and to download the accompanying PDF click here