jueves, 25 de abril de 2013

PREVENTING AND TREATING INFECTIOUS DISEASES

REMEMBER:
  • Health is a state of well being. Disease is when the body stops working correctly and symptoms appear.
  • We can stay healthy by keeping healthy habits, like enough rest, a balanced diet, good hygiene and physical exercise.
Preventing infectious diseases:
  • With good hygiene.
  • With vaccines: where a dead or inactive pathogen enters a healthy body.
Treatment for infections diseases:
  • Diseases caused by microorganisms are treated by antibiotics.
  • Infections caused by fungy are treated with antifugal medicines.
  • Medicines for diseases caused by viruses can only relieve symptoms.


miércoles, 24 de abril de 2013

MATTER

Matter is everything we can see or touch.

Properties of MATTER:

  • They have mass and occupy volume.
  • There are other properties :
    • Density.
    • Hardness
    • Elasticity
    • Water resistance
    • Transparency
  • We can distinguish one type of matter from another by their characteristic properties.
  • Matter that we use for making objectos is called material.
  • Mater can be in three states: solid, liquid and gaseose
Video sobre los estados de la materia. STATES OF MATTER