miércoles, 16 de diciembre de 2015

miércoles, 10 de junio de 2015

HOMOGENEOUS AND HETEROGENEOUS MIXTURES

EXPLANATION OF HOMOGENEOUS AND HETEROGENEOUS MIXTURES BY MIREIA MARTÍNEZ!! WELL DONE!!




jueves, 4 de junio de 2015

sábado, 30 de mayo de 2015

Mixtures

Homogeneous mixtures: we can´t see the different ingredients.


 
Milk +  sugar + cocoa powder....Can you see the ingredients? It's a homogeneous mixture.
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Heterogeneous mixtures: we can see and separate the ingredients easily.
Lettuce + oil + vinegar + tomato + cucumber....Can you see the ingredients? Can you separate them? It´s a heterogeneous mixture.


Matter: Mass and volume


Everything that has mass and volume is matter.

  • Mass is the amount of matter of an object. It's measured in kilograms (kg) using a scale.
Garfield is using a scale!

  • Volume is measured in litres (l) . It's the space that an object takes up. We use a jug.
This is a jug!




New vocabulary!


Can you pronounce all these words?

domingo, 19 de abril de 2015

sábado, 18 de abril de 2015

Energy changes

One type of energy can be transformed into another one. 



In this video you will see how kinetic energy (from falling water) is transformed into electricity.


In this one, light energy (from the sun) changes into heat energy (we burn a paper!!)

Watch these videos please!!



Types of energy!

Kinetic energy: produced by things in movement.
Light energy: the sun, the stars, a light bulb, fire...


Electric energy: electric devices use electric energy. A computer, a tv, a phone, a radio, a machine...

Heat energy: something is hot!!!!


Chemical energy: is stored in food, wood, petroleum, gas, oil...

Sound energy: this energy produces sound. A guitar, a piano, a person clapping hands, somebody singing...