1 - 3 van 3 bronnen weergeven

The Earth's Magnetic Field

The Earth behaves like a giant bar magnet and as such there is a magnetic field present around it. The Earth’s magnetic field is thought to be caused by flowing liquid metals in the outer core of the planet which causes electric currents and a magnetic field.

Onderwerp en thema
Form 2
Physics
Magnetism
Earth's magnetic field
Type bron
Werkbladen en klassikale activiteiten
Taal
English
Uitgever
Department of Higher Education
Publicatiedatum
No date
Licentie auteursrecht
CC BY
Houder auteursrecht
Department of Higher Education and Training
Schepper/Auteur
Leigh Kleynhans
Deelnemer
Michael Atkinson
Trefwoord
Magnetic Field
North Pole
South Pole
Weergeven Downloaden

The role of small and large scale farming

This 20 minute YouTube video explores the differences between small and large scale agriculture and the uses of each.

Onderwerp en thema
Form 2
Geography
Agriculture
Small scale agriculture
Type bron
Video
Taal
English
Uitgever
Geography with Dave
Publicatiedatum
2020
Licentie auteursrecht
Full copyright
Houder auteursrecht
Geography with Dave
Schepper/Auteur
Rajendra Davechand
Trefwoord
Small scale agriculture
Large scale agriculture
Weergeven

pH Scale

Outcomes:

  • Determine if a liquid is acidic, basic, or neutral
  • Place acids or bases in relative order
  • Describe on a molecular scale, with illustrations, how the water equilibrium varies with pH
  • Determine concentration of hydroxide, hydronium and water at a given pH
  • Relate liquid color to pH
  • Predict (qualitatively and quantitatively) how dilution and volume will affect the pH and concentration of hydroxide, hydronium and water
Onderwerp en thema
Form 1
Biology
Introduction to biology
The biology laboratory
Type bron
Simulatie
Taal
English
Uitgever
pHET Interactive Simulations
Publicatiedatum
No date
Licentie auteursrecht
CC BY-NC-SA
Houder auteursrecht
PhET Interactive Simulations
Schepper/Auteur
Yuen-ying Carpenter (lead)
Trefwoord
pH
Dilution
Concentration
Acids
Bases
Weergeven