Saturday, 23 May 2015

Animal behaviour: spiders that simulate to be other spider's prey, to...

Animal behaviuour: spiders that simulate to be other spider's prey, to... eat them.









Portias look like leaf detritus caught in a web, and this is often enough to fool web-building spiders, which have poor eyesight.

Sunday, 15 February 2015

What is villamaninita?

Search the internet for the following information about this geological material and write the responses in a WORD file:
 
1.- If villamaninita is a rock: what minerals is it made of?
 
If villamaninita is a mineral: what is it chemical formula?
 
2.- Why was it named this way? Where was it found and described for the first time?
 
3.- Search for a picture of it and download it.
 
4.- Search for a map of the place where it was found for the first time. Copy and paste it in your file.
 
Search for a picture of the mine where it was found and download it. Copy and paste it in your file.
 
5.- Search for the English name of Villamaninita (Villamaninite) and complete the missing information:
 
Chemical formula (again):
Composition:
 
Color:
Cleavage:
Density:
Fracture:
Hardness:
Luster:
Streak:
 
6.- Translate those characteristics into Spanish.
 
7.- Did you know that this mineral existed?

Eduardo G Aragón answer: file

Monday, 10 November 2014

12th November · Rosetta Mission · Landing on a comet

Rosetta probe will "land" in comet 67P/Churyumov–Gerasimenko on 12th November. 



This short science-fiction film is inspired by the Rosetta Mission (with subtitles). Enjoy it!


You can find more details about the Rosetta Mission on SEA official website: http://rosetta.esa.int/
 
 
A comet is a small Solar System body than travels around the Sun in highly elliptical orbits. They are irregular in shape. The nucleus is made up of a mass of ice, dust and gas. When comets travel close to the Sun, the ice evaporates, creating their famous long bright tails.
 A comet is not  an asteroid. Asteroids are made up of metal and rock material and comets are made up of dust, ice and rock. The orbits of the comets are very long. Asteroids are in closer orbits to the Sun.
 Rosetta mission is the first mission designed to orbit and land to a comet. It is a European Space Agency Mission. Composed of the module, which has 11 scientific experiments, and a Lander, called Philae. It’s got 10 additional experiments.
by Claudia