1 - 8 van 8 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

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

More on Newton's third law

An elaboration on some of the common misconceptions in dealing with Newton's Third Law. He also shows how to correctly and reliably identify Third Law force pairs.

Onderwerp en thema
Form 2
Physics
Newton's law of motion
3rd law of motion
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2016
Schepper/Auteur
David SantoPietro
Trefwoord
Third Law of Motion
Laws of motion
Newton

Newton's third law of motion

Learn about Newton's third law of motion, which states that for every action there is an equal and opposite reaction. Look at multiple examples that illustrate this law, including pushing a block on ice, pushing against a desk, walking on sand, how rockets work, and how an astronaut could save themselves from drifting in space.

Onderwerp en thema
Form 2
Physics
Newton's law of motion
3rd law of motion
Type bron
Video
Taal
English
Uitgever
Khan Academy
Publicatiedatum
2012
Schepper/Auteur
Sal Khan
Trefwoord
Third Law of Motion
Laws of motion
Motion
Newton

Numbers II

Outcome

In this lesson you will learn about:

  1. The real number system.
  2. Rational and irrational numbers.
  3. How to convert terminating decimals to rational numbers. 
  4. How to convert recurring decimals to rational numbers.
  5. Rounding off decimal numbers.
Onderwerp en thema
Form 1
Mathematics
Numbers II
Real numbers
Type bron
Cursus
Taal
English
Publicatiedatum
2023

Types of Numbers

This video explores the different types of numbers which exist.

Onderwerp en thema
Form 1
Mathematics
Numbers II
Real numbers
Type bron
Video
Taal
English
Uitgever
FuseSchool Global Education
Publicatiedatum
2017
Schepper/Auteur
FuseSchool Global Education
Trefwoord
Real numbers
Irrational numbers
Rational numbers

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

Worked example: analysing an ocean 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