Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Earth > Using Australias natural Resources 8.1 > Flashcards

Using Australias natural Resources 8.1 Flashcards

1
Q

Renewable Resources

A

Renewable resources don’t produce a lot of greenhouse gases. They limit greenhouse gas emissions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Renewable Energy?

A
  • sun, wind
  • moving water
  • living things
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Living things help other thongs survive. They’re used as …?

A
  • biomass
  • food
  • shelter
  • reproduction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Biomass?

A

Energy obtained from dead plants, plant matter, animals and their wastes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what do dead plants, plant matter, animals and their wastes all contain?

A

stored energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

3 example of Biomass being used as a resource?

A
  • 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.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Living things being used as a resource as food?

A

a resource for animals and some plants to survive. Need to eat other living things.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Living things being used as a resource in shelter?

A

many organisms use living things as shelter (bird nest, tape worm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Living things being used as a resource in reproduction?

A

other species used for reproductions. (plants rely on animals to pollinate flowers).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why are living things a renewable resource in farms?

A

They can replace themselves, reproduction. Farm animals killed for food but at the same time they are bread and replaced.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why are living things a renewable resource in plantations?

A

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.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What energys comes from the sun?

A

Solar energy (light and heat)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

energy coming from the sun…

A

converts its mass into energy [E=mc(2)]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Why is the sun a renewable energy source?

A

It converts 4million tonnes of mass into energy each day so it would take 5 billions years to burn out.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Insolation?

A

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
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Solar thermal heating systems?

A
  • 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
17
Q

Passive solar systems?

A
  • convert solar into heat energy
  • solar energy goes into space through glass
  • no equipment needed-passive
18
Q

Photovoltaic cells

A
  • Converts solar into electrical energy
  • located on solar panels
  • Can be used immediately or stored in battery
19
Q

Water management in water limited communities?

A

-cutbacks to non-essential uses such as cleaning cars and watering gardens.

20
Q

Indigenous water management strategies?

A
  • Practices are renewable to keep a balance.

- Animals hunted same rate they breed, same for plants, lakes.

21
Q

Grey Water?

A
  • 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%
22
Q

Black Water?

A
  • 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.
23
Q

Biologists?

A

Research bugs & bacteria to speed up composting process.

24
Q

Chemists?

A

Important to recycling of water waste as they know what chemicals clean water and what chemicals remove cleaning chemicals

25
Q

Ecologists?

A

Study impact of water recycling on environment.

26
Q

Charcoal as a cleaner?

A

pollutants stick to surface of carbon. Activated carbon is full of holes so more surface to stick on.

27
Q

Hydroelectric Power?

A

-Uses dams to create height difference between water bodied-energy falling water turns turbine, creates electricity. e.g. snowy mountain scheme.

28
Q

Tidal power?

A
  • Uses rising and falling to create electricity.
  • Tidal barrage put in places where there is big difference between height of low & high tide. This captures the energy.
29
Q

Wave Power?

A

Waves created by wind transferring its energy to water to water via friction.
Oscillating wave Columns
-Captures wind pushed by waves going in and out
Pelamis Wave Energy Converter
-Giant snake on water thing that moves pistons inside.

30
Q

Wind Turbines?

A

-rotors pushed by wind, energy converted to generator inside the nacelle which creates electricity.

Earth (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions