Displaying 41 - 50 of 54 Resources

Projectile at an angle

Figuring out the horizontal displacement for a projectile launched at an angle.

Subject and Topic
Form 2
Physics
Motion in a straight line
Speed and velocity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Projectile motion
Velocity
Speed
Motion
two dimensional motion

Projectile Motion

  • Determine how each parameter (initial height, initial angle, initial speed, mass, diameter, and altitude) affects the trajectory of an object, with and without air resistance.
  • Predict how varying the initial conditions will affect a projectile’s path, and provide an explanation for the prediction.
  • Estimate where an object will land, given its initial conditions.
  • Determine that the x and y motion of a projectile are independent.
  • Investigate the variables that affect the drag force.
  • Describe the the effect that the drag force has on the velocity and acceleration.
  • Discuss projectile motion using common vocabulary (such as: launch angle, initial speed, initial height, range, time).
Subject and Topic
Form 2
Physics
Motion in a straight line
Distance and displacement
Resource Type
Simulatie
Language
English
Publisher
pHET Interactive Simulations
Publication Date
No date
Creator/Author
Amy Rouinfar (lead designer - HTML5)
Keyword
Kinetic Energy
Projectile motion
Vectors

Projectile motion graphs

Visualising position, velocity and acceleration in two-dimensions for projectile motion.

Subject and Topic
Form 2
Physics
Motion in a straight line
Distance and displacement
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2018
Creator/Author
Khan
Keyword
Projectile motion
Projectile motion graphs
Position

Ramp: 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.
Subject and Topic
Form 2
Physics
Motion in a straight line
Equations of uniformly accelerated motion
Resource Type
Simulatie
Language
English
Publisher
pHET Interactive Simulations
Publication Date
No date
Creator/Author
Sam Reid (Developer)
Keyword
Force
Velocity
Acceleration

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
Subject and Topic
Form 1
Biology
Introduction to biology
The biology laboratory
Resource Type
Simulatie
Language
English
Publisher
pHET Interactive Simulations
Publication Date
No date
Creator/Author
Yuen-ying Carpenter (lead)
Keyword
pH
Dilution
Concentration
Acids
Bases

Scale of cells

Even though molecules, proteins, viruses, and cells are all tiny, there are significant size differences between them. The diameter of a water molecule is roughly 0.28 nanometers. The diameter of the protein hemoglobin is roughly 5 nanometers. The diameter of the HIV virus is roughly 120 nanometers. A red blood cell is 6-8 micrometers.

Subject and Topic
Form 1
Biology
Cell structure and organisation
Concept of cells
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2015
Creator/Author
Sal Khan
Keyword
Cells

Skeletal structure and function

Skeletons support and protect our bodies. Bugs have exoskeletons outside their bodies, while humans have endoskeletons inside. Our bones are in axial (skull, ribcage, spine) and appendicular (arms, legs) groups. Bone marrow makes blood cells; more specifically, red marrow makes blood and yellow marrow stores fat. 

Subject and Topic
Form 1
Biology
Introduction to biology
Concept and terminologies of biology
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2014
Creator/Author
Tracy Kim Kovach
Keyword
Skeletal structure

Space station speed in orbit

Speed necessary for the space station to stay in orbit.

Subject and Topic
Form 2
Physics
Motion in a straight line
Motion under gravity
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Speed
Gravity
Law of Universal Gravitation

Sura za Meiosisi - Phases of Meiosis

The phases of Meiosis.

Subject and Topic
Form 1
Biology
Introduction to biology
Scientific processes in biology
Resource Type
Video
Language
English
Publisher
KhanAcademyKiswahili
Publication Date
2012
Creator/Author
KhanAcademyKiswahili
Keyword
Meiosis

Urination

Micturition (peeing) starts with urine flowing from the kidneys to the bladder via ureters. The bladder expands using transitional epithelium. Urine exits through the urethra, controlled by internal and external urethral sphincters. Ureters prevent backflow, thereby reducing infection risk

Subject and Topic
Form 1
Biology
Introduction to biology
Concept and terminologies of biology
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2014
Creator/Author
Raja Narayan
Keyword
Urination