1 - 10 van 11 bronnen weergeven

Biodiversity and natural selection

Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms. 

Onderwerp en thema
Form 2
Biology
Balance of nature
The natural environment
Type bron
Video
Taal
English
Uitgever
California Academy of Sciences
Publicatiedatum
2014
Schepper/Auteur
California Academy of Sciences
Trefwoord
Biodiversity
Natural selection

Eating & Exercise

Outcomes:

  • Design a diet and exercise regimen.
  • Estimate the number of calories required for basic survival.
  • Estimate the number of calories burned by exercise.
  • Explain how heart health depends on diet and exercise.
  • Explain how Body Mass Index (BMI) depends on weight and height.
Onderwerp en thema
Form 2
Biology
Nutrition
Nutrition and food nutrient concepts
Type bron
Simulatie
Taal
English
Uitgever
pHET Interactive Simulations
Publicatiedatum
No date
Schepper/Auteur
Sam Reid (Developer)
Trefwoord
Biology
Exercise
Energy

Histograms

This video explores the histogram: which is one of the ways in which to present data.

Onderwerp en thema
Form 2
Mathematics
Statistics
Histograms
Type bron
Video
Taal
English
Uitgever
FuseSchool Global Education
Publicatiedatum
2020
Schepper/Auteur
FuseSchool Global Education
Trefwoord
Histograms

Introduction to cellular respiration

Cellular respiration is the process by which cells derive energy from glucose. The chemical reaction for cellular respiration involves glucose and oxygen as inputs, and produces carbon dioxide, water, and energy (ATP) as outputs. There are three stages to cellular respiration: glycolysis, the Krebs cycle, and the electron transport chain.

Onderwerp en thema
Form 2
Biology
Gaseous exchange and respiration
Respiration
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2009
Schepper/Auteur
Sal Khan
Trefwoord
Cellular Respiration

Introduction to passive and active transport

Introduction to passive and active transport

Onderwerp en thema
Form 2
Biology
Transport of materials in living things
Concept of the transport of materials in living things
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2015
Schepper/Auteur
Sal Khan
Trefwoord
Passive Transport
Active Transport

Matter and energy in food webs

Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

Onderwerp en thema
Form 2
Biology
Balance of nature
Food chain and food web
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2022
Schepper/Auteur
Sal Khan
Trefwoord
Food webs

Osmosis

Osmosis is the movement of water across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration. Osmosis helps regulate the flow of water in and out of cells, which is crucial to their function.

Onderwerp en thema
Form 2
Biology
Transport of materials in living things
Diffusion, osmosis and mass flow
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2015
Schepper/Auteur
Sal Khan
Trefwoord
Osmosis

Trigonometric Ratios

By the end of this unit you will be able to:

  • Define and use the trigonometric ratios of cosθ, sinθ and tanθ.
  • Calculate the trigonometric ratios in each quadrant of the Cartesian plane.
  • Calculate the value of expressions containing trigonometric ratios.
Onderwerp en thema
Form 2
Mathematics
Trigonometry
Trigonometry ratios
Type bron
Cursus
Taal
English
Uitgever
Pressbooks
Publicatiedatum
2020
Schepper/Auteur
Dylan Busa
Trefwoord
Trigonometry
Trigonometric ratios

Trigonometry

Outcomes

By the end of this course you will be able to:

  • Define and use the trigonometric ratios of  cosθ,  sinθ, and  tanθ.
  • Calculate the value of expressions containing trigonometric ratios with a calculator.
  • Calculate the value of expressions containing trigonometric ratios without a calculator.
  • Work with trigonometric tables.
  • Solve problems in 2 dimensions involving angles of elevation and depression
Onderwerp en thema
Form 2
Mathematics
Trigonometry
Trigonometry ratios
Type bron
Cursus
Taal
English
Publicatiedatum
2023

Worked example: analysing a generic food web

We can analyse the arrows in a food web to identify producers, primary consumers, secondary consumers, and decomposers.

Onderwerp en thema
Form 2
Biology
Balance of nature
Food chain and food web
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2022
Schepper/Auteur
Sal Khan
Trefwoord
Food webs