Law of Conservation definition

energy cannot be created or destroyed only transformed and transferred

Calculating Energy efficiency

useful energy / total energy x 100 = efficiency

uses flowing water to spin turbines and generates electricity. It is renewable, reliable and produces very low emissions.

wind turbines convert moving air into electricity. It is clean and renewable, but depends on wind availability.

uses nuclear reactions to produce heat, creating steam that turns turbines. It generates large amounts of energy with low emissions, but produces radioactive waste.

transferring energy changes its location or object (e.g., heat moving from a stove to a pot).

transforming energy changes its type (e.g., electrical to light)

how did Aboriginals use fire as an energy source

Thermal energy (warmth and light), cooking and the smoke to repel mosquitoes

energy transformations in a woomera and why it makes hunting more affective

chemical - mechanical - kinetic and is effective in hunting by increasing range and speed

what is cultural burning and how does it demonstrate an understanding of energy management

practice that uses low-intensity fires to care for the Country. It demonstrates a understanding of ecosystem energy cycles by managing fuel loads and heat intensity

how is cultural burning beneficial for the environment

improve landscape health, stimulate plant growth, and reduce the risk of wildfires

how aboriginals and modern australians used natural sources in energy

aboriginals used fire-stick farming, bark or shells for heat. australian use fossil fuels and solar power.

two similarities between Aboriginal energy use and modern energy use

Both systems depend entirely on the environment and Both use thermal energy (heat) to change materials.

why is aboriginal energy use considered scientific knowledge, refer to the concept of sustainable energy

because it’s based on thousands of years of "experiments" and observations of how the world works.

two differences between Aboriginal energy use and modern energy use

Aboriginal energy was local and immediate Modern energy is industrial and stored. both have Environmental Impact.

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energy yr9

Term	Definition
Law of Conservation definition	energy cannot be created or destroyed only transformed and transferred
Calculating Energy efficiency	useful energy / total energy x 100 = efficiency
hydroelectric energy	uses flowing water to spin turbines and generates electricity. It is renewable, reliable and produces very low emissions.
wind energy	wind turbines convert moving air into electricity. It is clean and renewable, but depends on wind availability.
nuclear energy	uses nuclear reactions to produce heat, creating steam that turns turbines. It generates large amounts of energy with low emissions, but produces radioactive waste.
transferring energy	transferring energy changes its location or object (e.g., heat moving from a stove to a pot).
transforming energy	transforming energy changes its type (e.g., electrical to light)
how did Aboriginals use fire as an energy source	Thermal energy (warmth and light), cooking and the smoke to repel mosquitoes
energy transformations when fire is lit using friction	mechanical - kinetic - thermal
energy transformations in a woomera and why it makes hunting more affective	chemical - mechanical - kinetic and is effective in hunting by increasing range and speed
what is cultural burning and how does it demonstrate an understanding of energy management	practice that uses low-intensity fires to care for the Country. It demonstrates a understanding of ecosystem energy cycles by managing fuel loads and heat intensity
how is cultural burning beneficial for the environment	improve landscape health, stimulate plant growth, and reduce the risk of wildfires
how aboriginals and modern australians used natural sources in energy	aboriginals used fire-stick farming, bark or shells for heat. australian use fossil fuels and solar power.
two similarities between Aboriginal energy use and modern energy use	Both systems depend entirely on the environment and Both use thermal energy (heat) to change materials.
why is aboriginal energy use considered scientific knowledge, refer to the concept of sustainable energy	because it’s based on thousands of years of "experiments" and observations of how the world works.
two differences between Aboriginal energy use and modern energy use	Aboriginal energy was local and immediate Modern energy is industrial and stored. both have Environmental Impact.

Created by: huhhalam

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