31 ene 2014

30 ene 2014

ENERGIES - Clean energy beginning with dirty water


A progress of 2013 in the solar energy of low cost, was a solar cell very small. This solar cell can produce energy  like a sheet of a tree, it can suppose a energy souce for emerging countries. This types of technologies not only will improve the quality of live of emerging countries or sites where there aren´t electricity, also, on the environment.This cell would be a hit because the price of oil is very high and consumers search accessible solutions.

27 ene 2014

UNIT 5 - PULLEY (EXERCISES)

It is form with a wheel that it has a central orifice that permit rotate fixed or freely on its axis,has got a channel in its periphery for can drag or be drag for one rope,chain,belt... There are different types of pulleys FIXED PULLEY:formula(F=R) MOVABLE PULLEY:formula(F=R/2) HERE WE HAVE SOME EXERCISE FOR PRACTISE THE PULLEYS.(interesting,and good for revise) http://www.educa2.madrid.org/web/educamadrid/principal/files/a1c18b06-dde8-4e44-98a0-49f0e0f2c425/M%c3%81QUINAS%20Y%20MECANISMOS/M%c3%a1quinas%20y%20mecanismos.pdf

ENERGIES - "Green toys" are trendy!


Spatial bases with solar panels, hydro-powered cars, doll houses with wind turbines and receivers to collect rainwaters are some of the "green toys" that are trendy.
Environmental toys promote that young children think about where energy came and how much can use, increasing their knowledge about renewable energies through the game. The manufacturers think that this toys will have an important role in our future. 

Click here for more information

25 ene 2014

UNIT 5 - RESOURCES

Some resources for review this unit:


Here you have an interesing game to know the use of the simple machines (inclined plane, level, wheels, pulley) This is a game of the museum of the Science of Chicago. Try to obtend the objects with simple machines!


- In this web, you can see a section of mechanisms and you can find a lot of webs, presentations, notes and animations for review this unit.

UNIT 5 - HOUSE OF MACHINES

This is a good example of connected mechanisms in which you can see a house of machines in which there are mechanims made with wood. 


22 ene 2014

UNIT 5 - MACHINES

Machines are something that helps you use energy and more effectively.One of the simple machine is the inclined plane which allows you to trade increased distance for decreased effort or force:by doubling the distance you move a thing,you can half the force you need to exert.