We dissected dogfish.
Today we learnt about fish and watch a documentury on giant squid.Then we disected squid it was mildly facinating lesson with Slug getting right into it.
We dissected Dogfish, Squalus acanthius. Mr Riley got in big trouble for stinking out the school before prizegiving assembly!
Learning the difference between Igneous, Metamorphic and Sedimentary rocks. Pointing out the different rocks and saying whether they are Igneous, Metamorphic and Sedimentary.
Today 10bw is learning about FOSSILS. A fossil is a preserved remain of a living organasim or a shell ect. They get formed by death tthen being completely covered in sediment then gets fossilised, this prossess takes millions of years. We made a mindmap and had a look at the fossils from stoke aswell.
A volcano is a crack in the earths crust letting molten magma out as lava. volcanos can happen by subduction (one plate gets pushed under another and the magma gets pushed up), spreading (where the plates spread apart) or hot spots (where there is a hot spot where the magma breaks through). Some examples of volcanos in New Zealand are Ruapehu, Ngaruhoe, Tongariro, Taranaki, Taupo, Auckland, White Island and Rotorua. The ash that comes out of a volcano can contain obsidan, pumice and basalt. Lava has silica in it which makes it sticky.
WOW!!! what can i say… Daniel Grimes team was shocking it was all burnt, i’d have too say keller marriot’s group was outstanding! ad there’s was the absoulte best!!
Today we learnt about earthquakes. An earthquake is a sudden movement of tectonic plates which causes a shockwave in the earths crust. This happens at a fault line, a fault line is a break in the crust where the earthquake happens.
We learnt that earthquakes are detected by seismographs. On the seismographs it shows two waves, the primary wave and the secondary wave. We detect how far away the earthquake is by the distance between the waves.
We also learnt about the richter scale which is measured from zero to nine. Each step on the richter scale is twenty seven more times powerful than the last.