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Living in a energy efficient house reduces the energy consumption in the household.

Without insulation cool air can leak from a house in the summer and warm air in the winter.

The National House Energy Rating Scheme uses computer simulations to provide a star rating for the exterior shell of a house.

Improvements in house design can be each of the following:

-considering the orientation of the windows

-considering the orientation of the house on the block of land

-tinting or shading west facing windows

- including coverings like eaves or verandas over north and west facing windows

- insulating the floor walls and roof to reduce energy loss

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Q3 Recall the direction of heat flow by selecting the correct words to complete the following statement

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Q3 Recall the direction of heat flow by selecting the correct words to complete the following statement

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Heat flows from regions of higher temperature to regions of lower temperature.

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Q7 Describle three ways in which the house shown in Figure 5.3.3 on page 193 reduces household energy consumption

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Q7 Describle three ways in which the house shown in Figure 5.3.3 on page 193 reduces household energy consumption

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Floor Insulation
Light coloured roof
North-facing aspect, maximising shading in summer and heat from sun in winter

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A label usually used on things like energy using appliances such as TVs and microwaves. It shows how energy efficient the appliance is. Such as how much energy is lost.

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Q8 Explain how adding insulation to a house and sealing up gaps can reduce the energy costs of heating and cooling the house

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Q8 Explain how adding insulation to a house and sealing up gaps can reduce the energy costs of heating and cooling the house

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It keeps the warm air in the house during winter and cool air inside the house during summer. This reduces the cost for heating and air conditioning because the air isin't leaking out and that makes the house more energy efficient.

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Regenerative braking

Braking system that catches vehicles energy stores in a battery and then can be used whenever.

Interior cooling in parked cars
Now luxury cars are incorporating solar cells on the roof to power interiorfans when the car is not in use, instead of using air conditioning

Magnetic refrigerators
A new way to provide cooling using magnetic fields. When developed air conditioners and fridges could use alot less energy.

LED (lights emitting diode)
Very bright (blue). Lights that use very little energy.

Organic photovoltaics
New cheap and flexible solar cells made out of carbon based interiors they are now only 5% efficient but reshearchers are trying to make them 15-20% efficient

Dry washing machines
Use dirt absorbing nylon beads and uses 90% less water than a normal washing machine. It saves water and therefore saves the energy needed to pump and heat the water.

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Q9 Explain how regenerative braking makes a car more energy efficient.

A. It catches the kinetic energy as the car slows down. The energy is then stored and used to power the cars electric motor when needed.

Q10 It is important for developers to improve the efficiency of organic photovoltaics to ensure their use in the future. Explain why

A.they have a huge potential for wide -spread and everyday use and a much more efficient to use in the environment.

Q11 Explain how a dry washing machine could save energy compared to a regular washing machine .

A. Much less energy is needed to pump water in as it only uses 10% of the regular washing machines water needs. It is also savebecause the water does not need to be heated.also the clothes come out dry so there is no need for a dryer

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List the types of appliances that must carry a energy rating label in Australia?
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In Australia there are eight different electrical appliances with energy ratings, these are:
-Air Conditioners (single phase, non-ducted
-Clothes washers
-Clothes dryers
-Dishwashers
-Televisions
-Refrigerators
-Freezers
-Computer Monitors

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Kites were the first type of aeroplane.

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Aircrafts have evolved from kites into big aeroplanes.

The first actual aeroplane design was from Leonardo da Vinci when he drew diagrams. He thought that he could help people fly.

British scientist Sir George Cayley discover many principles of flight, he did this by experimenting different shape of wings.

The first decades of the 1900s was where aviation development took off. They found out the bodies of an aircraft needed to be enclosed.

In 1937 Frank whittle designed the fist turbo jet engine.

Aviation boomed following WW2.

Use of composite materials such as carbon fibre reinforced plastic in the structure of modern aircrafts increases fuel efficiency.

In 2017 the engines of a passenger jet such as the A380 airbus have become more efficient and the materials used to construct the aircraft is lighter.

Improvement in the aircraft are still ongoing.

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Explain what the star rating in figure 5.3.1 on page 191 tells a consumer about the energy efficiency of this appliance?
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It is 4/6 energy stars. Its showing you that the energy efficiency is quite good

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Q4 state the aviation record that the wright brothers achieved in 1903

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Q4 state the aviation record that the wright brothers achieved in 1903

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The aviation record that the wright brothers broke was the first powered heavier-than-air controlled flight

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Q13 analyse why  the bodies of aircraft needed to become enclosed in order to improve their efficiency in the air

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Q13 analyse why  the bodies of aircraft needed to become enclosed in order to improve their efficiency in the air

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To build faster and more efficient aircraft, the bodies of the aircraft needed to be enclosed to reduce the drag on them when in flight.

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Summary
We rely on energy for most of the appliances in our homes and daily life’s, less energy reduces the amount of. Greenhouse gases.

Climate change could increase the risk of green house gases of globe warming.

We are trying to find more energy efficient appliances to help save energy for people all around the world. We could reduce this by buying high star energy rating appliances and by walking to school instead of using a car.

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List four ways you can save energy:

Walk to school,use solar panels,have a fire instead of a heater,use lights when it’s dark.

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The energy rating label system was revised for use in Australia in the year 2000. At that time, the most energy-efficient appliances on the market only had a rating of 3 or 4 out of a possible 6 stars. Propose why the designers of the system set it up in this way.
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It would still be possible for further research and experimenting with energy efficiency, so if a new product launched with even better energy use and less wasted energy production: the system would still be valid for future appliances.

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Q5. Explain why incandescent light globes have now almost completely been replaced by compact Florescent globes; 

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Q5. Explain why incandescent light globes have now almost completely been replaced by compact Florescent globes; 

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Beacause incandescent globes use more watts than fluorescent globes.

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You touch a cool glass of soft drink on a warm day identify whether heat flows from your hand into the glass or from the glass into your hand: hand—glass

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Q15 predict what a car would be like if it was 100% efficient 

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Q15 predict what a car would be like if it was 100% efficient 

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A car that would use a combination of petrol and an electrical motor. The car automatically selects the most efficient energy source to suit the type of driving. Also there would be no heat and no sound generated

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This is an example of energy efficiency on a washing machine.

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This picture was one of the first designs of an aircraft