1 - 10 van 12 bronnen weergeven

Charges and Fields

  • Determine the variables that affect the strength and direction of the electric field for a static arrangement of charges.
  • Investigate the variables that affect the strength of the electrostatic potential (voltage).
  • Explain equipotential lines and compare them to the electric field lines.
  • For an arrangement of static charges, predict the electric field lines. Verify the prediction using vector addition.
Onderwerp en thema
Form 1
Physics
Force
Types of forces
Type bron
Simulatie
Taal
English
Uitgever
pHET Interactive Simulations
Publicatiedatum
No date
Schepper/Auteur
Amy Rouinfar (lead designer - HTML5)
Trefwoord
Electric Field
Voltage
Electrostatics

Comparing animal and plant cells

Plant cells have a cell wall in addition to a cell membrane, whereas animal cells have only a cell membrane. Plants use cell walls to provide structure to the plant. Plant cells contain organelles called chloroplasts, while animal cells do not. Chloroplasts allow plants to make the food they need to live using photosynthesis.

Onderwerp en thema
Form 1
Biology
Cell structure and organisation
Plant and animal cells
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2022
Schepper/Auteur
Khan Academy
Trefwoord
Animal cell
Plant cell

Coulomb's Law

  • Relate the electrostatic force magnitude to the charges and the distance between them
  • Explain Newton's third law for electrostatic forces
  • Use measurements to determine Coulomb’s constant
  • Determine what makes a force attractive or repulsive
Onderwerp en thema
Form 1
Physics
Force
Types of forces
Type bron
Simulatie
Taal
English
Uitgever
pHET Interactive Simulations
Publicatiedatum
No date
Schepper/Auteur
Michael Barlow (lead developer)
Trefwoord
Coulomb's Law
Electrostatics
Electric Force

Density

Outcomes:

  • Describe how the concept of density relates to an object's mass and volume.
  • Explain how objects of similar mass can have differing volume, and how objects of similar volume can have differing mass.
  • Explain why changing an object's mass or volume does not affect its density (ie, understand density as an intensive property).
  • Measure the volume of an object by observing the amount of fluid it displaces.
  • Identify an unknown material by calculating its density and comparing to a table of known densities.
Onderwerp en thema
Form 1
Biology
Introduction to biology
Scientific processes in biology
Type bron
Simulatie
Taal
English
Uitgever
pHET Interactive Simulations
Publicatiedatum
2023
Schepper/Auteur
Diana López Tavares
Jonathan Olson
Trefwoord
Density
Mass
Volume
Archimedes' Principle

Evolution Clarification Swahili

Clarifying some points on evolution and intelligent design.

Onderwerp en thema
Form 1
Biology
Introduction to biology
Scientific processes in biology
Type bron
Video
Taal
English
Uitgever
KhanAcademyKiswahili
Publicatiedatum
2012
Schepper/Auteur
Khan Academy
Deelnemer
KhanAcademyKiswahili
Trefwoord
Evolution
Human Evolution

Force Diagrams

A force diagram is a useful tool to help us visualise forces acting on an object and gives us informa- tion about the object’s motion. We often use force diagrams when solving calculations involving the forces acting on an object.

Onderwerp en thema
Form 1
Physics
Force
Types of forces
Type bron
Werkbladen en klassikale activiteiten
Taal
English
Uitgever
Department of Higher Education
Publicatiedatum
No date
Schepper/Auteur
Linda Pretorius
Deelnemer
Michael Atkinson
Trefwoord
Force
External Force
Net Force

Forces and Motion

  • Predict, qualitatively, how an external force will affect the speed and direction of an object's motion.
  • Explain the effects with the help of a free body diagram.
  • Use free body diagrams to draw position, velocity, acceleration and force graphs and vice versa.
  • Explain how the graphs relate to one another.
  • Given a scenario or a graph, sketch all four graphs.
Onderwerp en thema
Form 1
Physics
Force
Types of forces
Type bron
Simulatie
Taal
English
Uitgever
pHET Interactive Simulations
Publicatiedatum
No date
Schepper/Auteur
Noah Podolefsky (Lead)
Trefwoord
Force
Velocity
Acceleration

Human fertilisation and early development

Overview of fertilisation and early human development. From conception leading to a zygote to blastocyst, embryo and fetus.

Onderwerp en thema
Form 1
Biology
Introduction to biology
Scientific processes in biology
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2017
Schepper/Auteur
Sal Khan
Trefwoord
fertilisation

Mitosis

Mitosis is how cells divide! Learn what happens in all the phases of mitosis: prophase, metaphase, anaphase, and telophase.

Onderwerp en thema
Form 1
Biology
Introduction to biology
Scientific processes in biology
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2015
Schepper/Auteur
Sal Khan
Trefwoord
Mitosis
Cells

Overview of animal and plant cells

Overview of animal and plant cells. Topics include cell walls, vacuoles, chloroplasts, peroxisomes, lysosomes, mitochondria, etc.

Onderwerp en thema
Form 1
Biology
Cell structure and organisation
Plant and animal cells
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2015
Schepper/Auteur
Sal Khan
Trefwoord
Animal cell
Plant cell