Energy Flashcards
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Two electric charges that attract or repel each other have energy in their __________ ______
negative charge
What is an example of something with energy in its elastic charge?
Rubber bands, springs, etc
Anything stretched has energy in its elastic energy store
Magnetic Energy Store
Two magnets that attract or repel each other have energy in their magnetic energy stores.
Name 8 types of energy stores
What are the 4 main ways that energy can be transferred between stores?
What is the conservation of energy principle?
Give examples of conservation of energy
For example a ball is dropped:
Gravitational potential of the ball decreases —–> Kinetic store of the ball increases
What is another word for wasted energy (D)
Dissipation
Total energy INPUT =
The useful energy + The wasted energy
Name some chemical energy stores
Batteries, food, fuels like wood, etc
Name non-renewable energy types
Coal, fossil fuels, nuclear power
Name 5 examples of renewable energy sources
Any of the following:
solar energy, wind, hydropower, geothermal, tidal, wave, biomass
solar energy advantages
Solar power is a renewable energy resource.
There are no fuel costs.
No harmful gases are released.
wind advantages
Wind is a renewable energy resource.
Wind does not release any harmful gases.
There are no fuel costs involved in running a wind turbine.
hydropower advantages
There are no fuel costs.
No harmful gases are released
Reliable
geothermal advantages
Geothermal is a reliable energy resource.
There are no fuel costs.
No harmful polluting gases are produced.
The hot water and steam can also be used for heating buildings directly.
tidal advantages
There are no fuel costs.
No harmful gases are released.
Relatively clean
wave advantages
There are no fuel costs.
No harmful gases are released.
Reliable
biomass advantages
Biomass is a renewable energy resource.
Growing more crops takes in carbon dioxide. This can offset what is given out during burning. This is called carbon neutral.
solar energy disadvantages
It is an unreliable energy resource. It is dependent on the weather and how many hours of sunlight there are.
Solar panels are expensive to fit.
wind disadvantages
Wind turbines can make a lot of noise and some people do not like to live near them because of this.
Some people think that wind turbines spoil the landscape.
Wind is an unreliable energy resource - the amount of electricity that is generated is dependent on how windy it is.
hydropower disadvantages
Building dams and tidal barrages can harm habitats and displace people from their homes.
Blocks underwater life
Creates methane
tidal disadvantages
Can only be installed on coastlines
Unreliable
Low power
wave disadvantages
Affects marine life
High costs
May affect local fishing zones
biomass disadvantages
Gases and smoke are released as the biomass fuel is burnt.
Lots of land is needed for growing the fuel crop.
True or false: photosynthesis converts energy carried by light to biomass
True
How is the sun’s energy transferred to the kinetic energy store of the wind
Name 5 energy resources that come from the sun
- Sun’s energy to light to photosynthesis to dead plants/animals to fossil fuels
How does the sun make waves?
It heats up the atmosphere, causing wind. This wind makes waves.
Which of natural gas, coal, waves, wind, biomass and fuel don’t rely on photosynthesis? Select two options.
Waves and wind
