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 ...

Ocean salinity

https://www.sciencelearn.org.nz/resources/686-ocean-salinity
There are many chemicals in seawater that make it salty. Most of them get there from rivers ...

The ocean and the carbon cycle

https://www.sciencelearn.org.nz/resources/689-the-ocean-and-the-carbon-cycle
The ocean plays an important role in the global carbon cycle. Carbon moves in and out of the ...

Seismic waves

https://www.sciencelearn.org.nz/resources/340-seismic-waves
When an earthquake occurs, the shockwaves of released energy that shake the Earth and ...

Human impact on rivers

https://www.sciencelearn.org.nz/resources/440-human-impact-on-rivers
Human beings have an impact on river ecosystems. The relationship living organisms have with ...

Cleaning up the oil spill

https://www.sciencelearn.org.nz/resources/1140-cleaning-up-the-oil-spill
On 5 October 2011, the cargo vessel Rena ran aground on the Astrolabe Reef. The ship was ...

Poisonous animals in New Zealand

https://www.sciencelearn.org.nz/resources/370-poisonous-animals-in-new-zealand
New Zealand has a very small number of poisonous animals. These animals are also called ...

River ecosystems

https://www.sciencelearn.org.nz/resources/439-river-ecosystems
The ecology of the river refers to the relationships that living organisms have with each other ...

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 ...

Earth system

https://www.sciencelearn.org.nz/resources/720-earth-system
Trying to understand how this planet we call home works can seem confusing – there are so many ...

Poisons and toxins

https://www.sciencelearn.org.nz/resources/364-poisons-and-toxins
Poisons are substances that cause harm to organisms when sufficient quantities are absorbed ...

Toxins and food webs

https://www.sciencelearn.org.nz/resources/367-toxins-and-food-webs
All living things depend on one another to live. Animals eat plants and/or animals to survive ...

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 ...

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 ...

Measuring toxicity

https://www.sciencelearn.org.nz/resources/366-measuring-toxicity
Toxicity can be measured by the effect the substance has on an organism, a tissue or a cell. We ...

Under the Earth’s surface

https://www.sciencelearn.org.nz/resources/931-under-the-earth-s-surface
The Earth is an enormous place. There is so much that we don’t yet know about what happens on ...

Adapting to marine habitats

https://www.sciencelearn.org.nz/resources/1126-adapting-to-marine-habitats
Being able to adapt is a matter of life or death. In a perfect world, organisms would not need ...

Birds’ roles in ecosystems

https://www.sciencelearn.org.nz/resources/1163-birds-roles-in-ecosystems
An ecosystem consists of all of the flora and fauna living within an area and the interactions ...

Water and weather

https://www.sciencelearn.org.nz/resources/725-water-and-weather
The water cycle is driven by energy from the sun. Liquid water is evaporated and changed into a ...

Liquefaction

https://www.sciencelearn.org.nz/resources/343-liquefaction
Liquefaction is a process that temporarily turns firm ground into a liquid. During the ...

Plate tectonics

https://www.sciencelearn.org.nz/resources/339-plate-tectonics
We can blame plate tectonics for many catastrophes over time – earthquakes, volcanoes ...

The Alpine Fault

https://www.sciencelearn.org.nz/resources/330-the-alpine-fault
In the South Island of New Zealand, the boundary between the Australian and Pacific tectonic ...

Earthquakes and volcanoes

https://www.sciencelearn.org.nz/resources/930-earthquakes-and-volcanoes
We live in a very exciting country. A day’s drive in a car can take us from snowy mountains ...
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