Humans and the water cycle

https://www.sciencelearn.org.nz/resources/726-humans-and-the-water-cycle
We are becoming increasingly aware of our impacts on nature, but unfortunately many of the ...

Scientific modelling

https://www.sciencelearn.org.nz/resources/575-scientific-modelling
In science, a model is a representation of an idea, an object or even a process or a system ...

Ocean dissolved gases

https://www.sciencelearn.org.nz/resources/688-ocean-dissolved-gases
Seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon ...

Ocean density

https://www.sciencelearn.org.nz/resources/687-ocean-density
The density of seawater plays a vital role in causing ocean currents and circulating heat ...

What is the Earth system?

https://www.sciencelearn.org.nz/resources/1256-what-is-the-earth-system
There are many interacting systems that make up the Earth, many of which are dynamic. These ...

Melting and freezing

https://www.sciencelearn.org.nz/resources/608-melting-and-freezing
Water can exist as a solid (ice), liquid (water) or gas (vapour or gas). Adding heat can cause ...

Ocean temperature

https://www.sciencelearn.org.nz/resources/707-ocean-temperature
The temperature of the ocean determines what form the water takes. Most of the ocean is liquid ...

Non-renewable energy sources

https://www.sciencelearn.org.nz/resources/1570-non-renewable-energy-sources
Energy comes from many sources, and to describe these sources we use two terms: renewable and ...

Bioindicators

https://www.sciencelearn.org.nz/resources/1538-bioindicators
A bioindicator is a living organism that gives us an idea of the health of an ecosystem. Some ...

Insulation

https://www.sciencelearn.org.nz/resources/1006-insulation
In Antarctica, winter temperatures can vary from -70ºC to -15ºC – it is one of the coldest ...

Water density

https://www.sciencelearn.org.nz/resources/1009-water-density
Water density changes with temperature and salinity. Density is measured as mass (g) per unit ...

Ecosystems

https://www.sciencelearn.org.nz/resources/993-ecosystems
What is an ecosystem? An ecosystem is made up of animals, plants and bacteria as well as the ...

Soil formation

https://www.sciencelearn.org.nz/resources/955-soil-formation
New Zealand has a wide variety of landscapes. A day’s sightseeing journey might include ...

Build a marine food web

https://www.sciencelearn.org.nz/resources/1525-build-a-marine-food-web
In this activity, students build their own food web using images of organisms from the marine ...

Ocean motion

https://www.sciencelearn.org.nz/resources/691-ocean-motion
The ocean has a complex circulation system, moving water, heat, salt and nutrients around the ...

Renewable energy sources

https://www.sciencelearn.org.nz/resources/1571-renewable-energy-sources
Renewable energy is fuel that comes from a source that can be replenished in a short amount of ...

The ocean and Earth’s systems and cycles

https://www.sciencelearn.org.nz/resources/690-the-ocean-and-earth-s-systems-and-cycles
The ocean plays an important part in several Earth systems and cycles. This is hardly ...

Bioplastics

https://www.sciencelearn.org.nz/resources/1474-bioplastics
Bioplastics are plastic materials that are either biodegradable or derived from renewable ...

Carbon dioxide emissions calculator

https://www.sciencelearn.org.nz/resources/1588-carbon-dioxide-emissions-calculator
This activity requires access to two Internet sites: a carbon emissions calculator and a school ...

Seaweek resources

https://www.sciencelearn.org.nz/resources/2162-seaweek-resources
Seaweek is New Zealand’s annual national week about the sea. It is hosted by the New Zealand ...

Climate change, melting ice and sea level rise

https://www.sciencelearn.org.nz/resources/2277-climate-change-melting-ice-and-sea-level-rise
One implication of climate change is sea level rise. Sea level is the average height of the ...

New Zealand’s National Science Challenges

https://www.sciencelearn.org.nz/resources/1112-new-zealand-s-national-science-challenges
As New Zealanders looking to the future, we are faced with many opportunities – and challenges ...

Fertiliser

https://www.sciencelearn.org.nz/resources/964-fertiliser
Just as we have essential needs for our growth, plants also have essential needs for their ...

Antarctic life and ecosystems

https://www.sciencelearn.org.nz/resources/326-antarctic-life-and-ecosystems
Antarctica – a land of extremes Antarctica is the highest, whitest, driest, coldest and ...
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