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What two power stations will you compare?

How are these power stations similar?

How are these power stations different?

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Create 3+ True or False questions about:

→ how power stations generate electricity

→ useful and wasted energy transfers in power stations.

→ Calculating and improving efficiency

→ Investigating a hypothesis

→ Independent, dependent and control variables

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Two power stations to compare are the hydroelectric and nuclear power stations. Both of these involve using kinetic energy to produce electricity. However, nuclear stations require an additional use of chemical potential energy.

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wind and nuclear
outputs are both electricity
one input energy is kinetic energy and another is nuclear

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Coal and Nuclear power stations
Same energy output
Different energy input

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- I'm going to compare coal-fired power station and wind power station

- Both power stations have turbines and generators to generate the energy into useful energy output.

- Coal-fired power station applies thermal energy to produce steam to provide the kinetic energy that turns the turbines, on the other hand, wind power station's turbines are turned by the wind

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wind and nuclear
both generate electricity
wind isn't radioactive

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Geothermal and Nuclear

Same in put

different output

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1. Coal power station and wind power station
2. Eventually the input is converted to kinetic energy
3. Different source of energy; coal power station uses thermal energy and chemical energy as initial energy source, while wind power station uses kinetic energy throughout the entire process

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Wind and nuclear power both provide electricity; the former produces kinetic energy, while the latter produces nuclear power.

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Wind power station and hydro power station.
They are both clean sources of energy.
Instead of water, wind power is pushed by the wind.

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What two power stations will you compare?
--> Hydropower & Wind power
How are these power stations similar?
--> Both generates power through turbine spinning.
How are these power stations different?
--> Uses different sources to generate power.

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1. Energy is measured in Watts
2. When wasted energy reduces, efficiency increases
3. All power stations involve turbines

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Nuclear power station
and heat power station

They both use thermal energy

The way produce thermal energy it different

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coal and hydroelectric
both generate electricity
one is bad for the environment, and one is good for the environment

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What two power stations will you compare?
wind power and hydroelectric
How are these power stations similar?
both of these involve kinetic energy to move the turbine and produce electricity.
How are these power stations different?
they have different input energy

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Compare: Hydro, nuclear
Similar: Kinetic energy
Different: Nuclear Fission been used

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The two power station I chose to compare are the wind power station and nuclear power station. Both of these power station use kinetic energy. However, wind power station starts with kinetic energy and nuclear power station starts with thermal energy.

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What two power stations will you compare?
-Wind power
- Hydropower

How are these power stations similar?
- Both generate power
- Both using kinetic energy

How are these power stations different?
- having different input energy

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1. Practically a perpetual machine exists
2. The greater the input is, the higher the efficiency is
3. Energy is measured in Watts

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1. Is energy measured in Joules
2. When the useful energy is produced, the efficiency decreases
3. The greater the output is, the greater the efficiency is

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Compare: Hydroelectric power station and coal power station.

Similarities: they all use kinetic energy to generate electricity.

Differences: Coal energy stations heat coal which produces thermal energy, then produce kinetic energy through steam, and push the turbine. Hydroelectric power uses the potential energy stored in the dam at higher sea level and then turns into kinetic as the water falls.

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What two power stations will you compare?
Wind power station and tidal power station.

How are these power stations similar?

They both use the natural resource as their imput. Ex. Wind and Wave.

How are these power stations different?
Tidal imput is more powerful than wind

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1. Energy output is electricity
2. Energy efficiency is 100%
3. The generator converts kinetic energy into electricity

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- All power generators release thermal energy as wasted energy
- Reducing waste energy means increasing efficiency
- Energy is measured in Watts

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1. Q: Fans are what generate the energy into electrical energy in the power station.
A: False

2. Q: Wasted energy is the final output energy that will be useful, for example, the electrical energy provided by the power station.
A: False

3. To calculate the efficiency of an electrical device, you will need to know it's energy input.

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Thermal and Nuclear

Both utilizes heat source/thermal energy

Heat in Nuclear power plant is used to make steam. However, heat in thermal energy is used to convert into electricity

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1, Do the power generate 100% efficiency
2, The higher the efficiency is the bigger the energy is
3, All of the power is created by kinetic energy

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1. Efficiency = output/input*100%
2. Reducing the waste energy can improve the efficiency
3. Energy is measured in watts

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1. All power stations involve a generator
2. input=output means efficient
3. All power stations involve kinetic energy

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1. Friction is a helpful stuff when generating energy
2. Efficiency is always higher than 100%
3. All power stations need turbine

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Compare-hydropower and wind
Similar-they both involve kinetic energy
Different-input energy

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What two power stations will you compare?
Solar power station and hydro power station

How are these power stations similar?
- both are renewable energy sources
- both are used to generate electricity
How are these power stations different?
- solar uses sunlight
- hydro uses water flow (kinetic energy)