lunes, 30 de noviembre de 2015

Invertebrates: Arthropods

Arthropods: they have an external skeleton , jointed legs and a segmented body.

The easiest way to distinguish an arthropod from any other animal is to see if they have:

1) A segmented body.

This means that they will have a body made up of more than one part.  Spiders have two segments and flies have three segments.

Two Segments


2) Many jointed legs or limbs.
   

Spiders have 8 legs, millipedes can have...  Hundreds!

  

3)  An exoskeleton.

This is an external skeleton. Like armor, it protects the arthropods body.  When arthropods are born the exoskeleton is soft but hardens quickly and it can be shed as the creature grows.  Arthropods are invertebrates; which means that they do not have a backbone.

4)  Cold blooded

Arthropods are cold blooded -- which means, their body temperature depends on the temperature of the environment surrounding them.


They include insects, arachnids, crustaceans and myriapods. 
- Insects:
  • Insect bodies have three parts, the thorax, abdomen and head.
  • Insects have two antennae.
  • Insects have three pairs of legs.

- Arachnids:  
  • Arachnids bodies have two parts.
  • Arachnids do not have antennae. They do not have wings. 
  • Arachnids have eight legs.

- Crustaceans: 
  • They have got 4 antennae.
- Myriapods:
They have got many legs

Centipede


Invertebrate: molluscs

Molluscs are a large group of invertebrate animals. Molluscs have soft bodies, and their bodies are not divided into rings like the segmented worms called annelids . Molluscs don't have legs, though some have flexible tentacles for sensing their environment or grabbing things. Most mollusc species grow a hard shell for protection, but their shell grows in only one or two pieces. It doesn't have joints like the exoskeletons of insects and crustaceans .
There are three main groups of molluscs. 
1)Snails ( Gastropoda (gastrə pod′), ) are the most diverse group, there are tens of thousands of species. Nearly all snails grow a spiral shell that is all one piece. A few snail groups have stopped growing shells; they're called slugs 
   

2) Bivalvia  (/ˈbaɪˌvælv/ )  , the clams, oysters, and mussels . These are molluscs with two shells that they can close up tight for protection.
Herbacious Linguine and Clams     
 3)Cephalopoda (sefə lə pod′) , the squids and octopuses. They only live in salt water. They have no shells, but are larger, smarter, and faster than their relatives in the other groups. Squids and octopuses are all predators; they eat fish, crustaceans, and other mollusks.

  

jueves, 26 de noviembre de 2015

Bacteria

Find the bacteria in the pond and answer 6 questions

Groups of living things

Short description and activity

Activity: Classify

Invertebrates



Sponges are very simple animals that live permanently attached to a location in the water.

The body of this animal has thousands of pores which let water flow through it continually. Sponges obtain nourishment and oxygen from this flowing water. The flowing water also carries out waste products. 


Suck the water in, filter out the food, and send the water out. 

These invertebrates range in size from a few millimeters to 2 meters tall.




Cnidarians : they have soft bodies with tentacles to catch their prey. Some can move about ( jellyfish); others are attached to surfaces beneath the sea (coral).


Habitantes de la superficie: Las mareas rojas | Los Bloggers de Axena


Echinoderms are marine animals. They have an internal skeleton made up of plates. Many echinoderms have spines.



If you ever turn a starfish over you will see hundreds of little tubes on each arm. Those tubes attach to an object, suck in, and attach to help the creature move.


Worms have long, soft bodies. They do not have legs. Some worms are terrestrial and some are aquatic.

HOW AND WHAT DO WORMS EAT? |The Garden of Eaden


Molluscs are a large group of invertebrate animals. Molluscs have soft bodies, and their bodies are not divided into rings like the segmented worms called annelids . Molluscs don't have legs, though some have flexible tentacles for sensing their environment or grabbing things. Most mollusc species grow a hard shell for protection, but their shell grows in only one or two pieces. It doesn't have joints like the exoskeletons of insects and crustaceans .
There are three main groups of molluscs. 
1)Snails ( Gastropoda (gastrə pod′), ) are the most diverse group, there are tens of thousands of species. Nearly all snails grow a spiral shell that is all one piece. A few snail groups have stopped growing shells; they're called slugs 
   

2) Bivalvia  (/ˈbaɪˌvælv/ )  , the clams, oysters, and mussels . These are molluscs with two shells that they can close up tight for protection.
Herbacious Linguine and Clams     
 3)Cephalopoda (sefə lə pod′), the squids and octopuses. They only live in salt water. They have no shells, but are larger, smarter, and faster than their relatives in the other groups. Squids and octopuses are all predators; they eat fish, crustaceans, and other mollusks.


  


Arthropods:

The easiest way to distinguish an arthropod from any other animal is to see if they have:

1) A segmented body.

This means that they will have a body made up of more than one part.  Spiders have two segments and flies have three segments.

Two Segments


2) Many jointed legs or limbs.
   

Spiders have 8 legs, millipedes can have...  Hundreds!

   

3)  An exoskeleton.

This is an external skeleton. Like armor, it protects the arthropods body.  When arthropods are born the exoskeleton is soft but hardens quickly and it can be shed as the creature grows.  Arthropods are invertebrates; which means that they do not have a backbone.

4)  Cold blooded

Arthropods are cold blooded -- which means, their body temperature depends on the temperature of the environment surrounding them.






Invertebrates: Echinoderms.

Echinoderms are marine animals. They have an internal skeleton made up of plates. Many echinoderms have spines.





If you ever turn a starfish over you will see hundreds of little tubes on each arm. Those tubes attach to an object, suck in, and attach to help the creature move.







Invertebrates: Worms

Worms have long, soft bodies. They do not have legs. Some worms are terrestrial and some are aquatic.


HOW AND WHAT DO WORMS EAT? |The Garden of Eaden

Invertebrates: Cnidarians

Cnidarians : they have soft bodies with tentacles to catch their prey. Some can move about ( jellyfish); others are attached to surfaces beneath the sea (coral).




Habitantes de la superficie: Las mareas rojas | Los Bloggers de Axena    



Mammals

Mammals

martes, 24 de noviembre de 2015

Invertebrates: Sponges


  


Sponges are very simple animals that live permanently attached to a location in the water.

The body of this animal has thousands of pores which let water flow through it continually. Sponges obtain nourishment and oxygen from this flowing water. The flowing water also carries out waste products. 


Suck the water in, filter out the food, and send the water out. 


These invertebrates range in size from a few millimeters to 2 meters tall.








jueves, 24 de septiembre de 2015

miércoles, 23 de septiembre de 2015

Probiotics

Los alimentos probióticos son alimentos con microorganismos vivos adicionados que permanecen activos en el intestinoy ejercen importantes efectos fisiológicos. Ingeridos en cantidades suficientes, pueden tener efectos beneficiosos, como contribuir al equilibrio de la microbiota intestinal del huésped y potenciar el sistema inmunitario. Pueden atravesar elAparato digestivo y recuperarse vivos en los excrementos, pero también se adhieren a la mucosa intestinal. No son patógenos, excepto en casos en que se suministran a individuos inmunodeficientes.
Contienen esta clase de microorganismos y, por tanto, son alimentos probióticos los yogures frescos y muchos otros productos lacto fermentados.

viernes, 18 de septiembre de 2015

martes, 15 de septiembre de 2015

Nutrition

Digestive system. Presentation and game (label the different parts of the digestive system)

Digestive system + match

MATCH a number with the appropriate definition (letter):

1) Teeth

2) Oesophagus

3) Liver

4) Bile

5) Gallbladder

a) A sac attached to the liver in which bile is stored.
b) It produces bile.
c) It transports food from the mouth to the stomach.
d) They are used to chew food into small pieces.
e) It breaks down fats into small droplets.


Digestive system

Nutrition organs 6º

miércoles, 3 de junio de 2015

Ramón y Cajal. Structure and function of the nervous system.

It was his work that established the ‘neuron doctrine’ as the accepted model for the structure and function of the nervous system, and our modern understanding of the nervous system is founded on this doctrine.

He studied tissue from different regions of the brain and from the brains of various species of vertebrates. He discovered that, rather than being fused together in a continuous web (as had previously been thought), the cells that make up the nervous system are in fact discrete units, separate from one another.

Cajal’s discovery that nerve cells were independent required a new model for how the nervous system functioned. He proposed that electrical impulses were conducted through chains of nerve cells and that the direction of conduction is fixed. This is the ‘Law of Dynamic Polarization’, which states that impulses are conducted in a fixed direction through the neuron from dendrites, through the cell body, to the axon.

Cajal received many honours, including the Nobel Prize in Physiology or Medicine in 1906, and the Spanish government built the Cajal Institute, for neurobiological research, in his name.

martes, 2 de junio de 2015

Alexander Graham Bell

Alexander Graham Bell

Reading comprehension: Read and answer the questions.

--> Copy the 9 questions and the appropriate answers in your notebook.

Reading comprehension: read and answer the questions.


--> Copy the questions and the appropriate answers in your notebook.

Reading comprehension

--> True or false. Write the True sentences in your notebook.

jueves, 5 de marzo de 2015

Checking comprehension of the unit. 5th grade

1 What are two goals when designing machines?
1
2 Modern cars focus on….?
·        
3 In what forms can energy exist?
1
4 What happens to energy when it is not at work?  Give an example.
·        
5 Fill in the blanks with the properties of energy:
Energy can be________ from one form to another.  
Energy can be________from one body to another. 
Energy can be ________. Example: animals _____food energy.
Energy can be_________from one place to another. 

6 What is a renewable energy source?  Give an example.
·        
7 What is a non-renewable source? Give an example.
·        


8 Fill in the chart (if not applicable, put N/A)
Energy Source
Renewable or Non-Renewable?
Type of energy
It´s energy can be transformed into…
Fossil Fuels or Nuclear Fuels?
Does this energy source cause pollution?






























































9 What are some of the negative consequences of using energy to provide us with modern comfort? What causes these environmental problems?  How do they effect the environment?
·       
10 Which do you think causes the greatest alarm for the environment?  Why?

11 What are ways we can save energy in our daily lives?





martes, 27 de enero de 2015

viernes, 9 de enero de 2015

Refraction, prisms and lens

Refraction, prisms and lens


Resultado de imagen de prisma luz


Resultado de imagen de prisma


La Refracción de la luz

Refracción de la luz es el cambio de dirección que sufre la luz cuando pasa de una sustancia transparente a otra. Ejemplo, el aire, a otro, como el agua. 
Los rayos de luz que cambian de dirección se llaman rayos refractados.
refraccion.jpg (306×240)
refraccion_2.png (448×331)
Al introducir una cuchara en un vaso con agua parece que se dobla o se corta, porque los rayos de luz se desvían, ya que viajan más lento al pasar del aire, donde existen menos partículas, al agua, donde hay más.

Resultado de imagen de refaction

Light. The colour of objects

The colour of objects

jueves, 8 de enero de 2015