Using Australias natural Resources 8.1 Flashcards
Renewable Resources
Renewable resources don’t produce a lot of greenhouse gases. They limit greenhouse gas emissions.
Renewable Energy?
- sun, wind
- moving water
- living things
Living things help other thongs survive. They’re used as …?
- biomass
- food
- shelter
- reproduction
Biomass?
Energy obtained from dead plants, plant matter, animals and their wastes.
what do dead plants, plant matter, animals and their wastes all contain?
stored energy
3 example of Biomass being used as a resource?
- Burning wood. The stored energy in wood is released as heat when burnt.
- Biogas a fuel, produced by decomposing organic waste. Gas can be used as fuel. Limits GHG emissions.
- Fermenting crops to produce fuel.
- Growing Algae to produce biodiesel fuel.
Living things being used as a resource as food?
a resource for animals and some plants to survive. Need to eat other living things.
Living things being used as a resource in shelter?
many organisms use living things as shelter (bird nest, tape worm)
Living things being used as a resource in reproduction?
other species used for reproductions. (plants rely on animals to pollinate flowers).
Why are living things a renewable resource in farms?
They can replace themselves, reproduction. Farm animals killed for food but at the same time they are bread and replaced.
Why are living things a renewable resource in plantations?
They are areas of land where trees are planted for their resource. Native forests take decades to grow but plantations grow very fast. Used for timber, so regularly cut down and need replacing often.
What energys comes from the sun?
Solar energy (light and heat)
energy coming from the sun…
converts its mass into energy [E=mc(2)]
Why is the sun a renewable energy source?
It converts 4million tonnes of mass into energy each day so it would take 5 billions years to burn out.
Insolation?
the amount of radiation that reaches earth:
- amount of star energy reaching earth
- time taken for energy to be received
- area energy is spread over
Solar thermal heating systems?
- used to convert solar energy into heat energy.
- an active system, as equipment is used to collect and store solar energy.
- We use mirrors and lenses to collect & store energ
Passive solar systems?
- convert solar into heat energy
- solar energy goes into space through glass
- no equipment needed-passive
Photovoltaic cells
- Converts solar into electrical energy
- located on solar panels
- Can be used immediately or stored in battery
Water management in water limited communities?
-cutbacks to non-essential uses such as cleaning cars and watering gardens.
Indigenous water management strategies?
- Practices are renewable to keep a balance.
- Animals hunted same rate they breed, same for plants, lakes.
Grey Water?
- Scientists looking to recycle grey water instead of using agricultural water.
- Not from a toilet
- safe for watering plants, soil filters the water
- using GW reduces household water use by 30%
Black Water?
- harder to recycle as contains bad pathogens
- Waste from toilet
- Composting destroys pathogens, takes a year.
- Biologists looking for bugs & bacteria to fasten process
- Reclaimed water has been treated.
Biologists?
Research bugs & bacteria to speed up composting process.
Chemists?
Important to recycling of water waste as they know what chemicals clean water and what chemicals remove cleaning chemicals
