PHOTOS !!

Amphibians with Tails?

Salamanders are often confused with lizards. But don't let yourself be fooled: they are definitely a part of the surprising and numerous family of beings with a ''double life'' - those who live in the water and on land. (Amphibious)
There are some 300 varieties of salamanders, but all are defined by the name of their order: Caudata, that means ''with tail.''

Salamanders are fascinating because of their colors, their strange shapes. For example:

The Spotted Salamander

There are large salamanders, sometimes growing over nine inches long.
Their skin is bluish-black or dark gray, and they have two rows of round yellow or orange spots down their backs. Their bellies are slate gray.
Spotted Salamanders live in forests where there are pools of water in the Spring, or nearby ponds.
Adult Spotted Salamanders spend most of their time underground.

ART HOMEWORK

For Monday, 7th 2010

Bring for art class the following material:

• 1 white cardboard


• 1 old shoe box


• ruler


• pencil


• gluestick


• colors


• markers


• scisorss

We are going to made a 3D PICTURE BOX, like this:

The stages of Life

Do you remember this activity?

Label the diagram with following words:

1. Moth


2. Larva


3. Pupa


4. Eggs

Lesson 8 Energy to Mix and Split

Energy to mix and split

A mixture contains substances that are mixed together but are not chemically combined.

Air is an example of a mixture as it contains a number of different gases including oxygen, carbon dioxide and nitrogen.
A solution is a mixture of a solute and a solvent e.g. salt and water.
A solute is the substance which is dissolved (salt) and a solvent is a liquid in which a substance dissolves (water).

Homogeneous and Heterogeneous Mixture

Homogeneous

These mixtures are made up of more than one phase or of different parts and can be separated physically. The different components are visibly distinguishable from one another.
Ex: A chocolate chip cookie, a piece of quartz containing a vein of gold. granite, oil and water, and a bowl of raisin bran cereal.

Heterogeneous

Have only one phase, or have a uniform appearance throughout, and any portion of the sample has the same properties and composition. Each region of a sample is identical to all other regions of the sample.
Ex: salt water and rubbing alcohol, are considered homogeneous because they are in one phase.

Sometimes it is necessary to separate solutions and to do this we have a number of separating techniques including filtration, evaporation, and distillation.

Filtration
Is the method used for separating an insoluble solid (a solid that will not dissolve) from a liquid. A tea bag is an everyday example of a filter. It works because it has small holes to let the liquid through but blocks the larger pieces of solid.

Evaporation

Is a method of separating a soluble solid from a solvent e.g. salt and water.

Distillation
Distillation is a process involving the vaporization of a liquid by boiling it and then condensing the vapor by cooling it. It can be used to purify a liquid (e.g. to obtain pure water from a salt-water solution).

DISTILLATION - EVAPORATION - FILTRATION

Lesson 7 The power of magnets

Well here is the presentation of the Lesson 7 The power of magnets, as well there is one viedo and some games that you can watch and play !!! :D

Presentation
http://www.slideshare.net/gabriela22/lesson-7-the-power-of-magnets-4382823

Video
http://www.youtube.com/watch?v=2vqgXRKHI-s&feature=related

Games
http://www.funny-games.biz/magnetism.html
http://www.candystand.com/play/magnets
http://www.bbc.co.uk/schools/scienceclips/ages/7_8/magnets_springs.shtml

Lesson 6 Electric Energy

Hi guys, in this leson we saw how circuits work.

Here is the presentation and also is the link of the place in which you can play the game.

http://www.bbc.co.uk/schools/ks2bitesize/science/physical_processes/changing_circuits/play.shtml

http://www.slideshare.net/guest698cf7f/lesson-6-electric-energy

Types of Machines

In this lesson we learned about several types of machines

The Simple and The Compound Machines


The simple Machines are the most basic like:

• the inclined plane
• the lever
• pulleys
• wedges and screws

The Inclined Plane

Is used to lif to objects by sliding or rolling them.

http://www.youtube.com/watch?v=pG_kT565-XQ&feature=related



The Lever

It let us apply the force at one point by making a smaller force at another point. A lever has a fulcrum, and an effort point (were we make the samller force ) and a resistance point (where the large force is applied).

http://www.youtube.com/watch?v=pG_kT565-XQ&feature=related




The Pulley


This lifts weights, they change the direction in which the forces act. For example, when we pull down on the end of a rope on a pulley, the load attached to the end of the rope rises.

http://www.youtube.com/watch?v=TlPWy7qW7oM&feature=related

A wedge

Is use to cut or separate things

A screw

It is used to fasten things together

Compound Machines

The compound machines are combinations of simple machines, some daily life examples are: cars, electric stairs, computers, etc.