Solar energy captured by solar panels is a limitless form of energy, as the earth is bombarded with extreme amounts of solar energy every day, according to the National Renewable Energy Laboratory. It's also clean, producing no carbon dioxide, and is very low-maintenance, since solar panels have no moving parts.

Unfortunately, the National Renewable Energy Laboratory says its high installation cost makes it up to four times more expensive than the cost of electricity from a standard utility company. For optimal operation and maximum energy production, it requires year-round sunny weather and is very expensive if repair is necessary, according to the U.S. Environmental Protection Agency.

There are some tips to save power which I think are very easy to apply. Firstly, we should use energy saving light bulbs in our house. It will help us to reduce our electricity bill. Secondly, we should use public transport if we need to go long distance. We can use bicycles for short distances. I think it is good for our health and economical. And remember, before going to bed, we should turn off all lights and other unused electrical devices. It's an easy way to save our planet.

rewable:wind,solar enery,hydro,nuclear,biogas...

non rewable:coal,oil,natural gas...i think people will use it more in the future

BẠN ƠI MK CHỈ GỢI Ý THÔI NHADỰA VÀO ĐÓ BẠN VIẾT NHA

TOPIC 1

Tell four rules you must obey when you are a road user

=> - Always look carefully where you go

- Use the pavement or footpath

- Walk across the street at the zebra crossing

- Wait for the traffic light to turn green before you cross the street

- Wear white or light-coloured clothes in the dark

- Give a signal before you turn left or right

TOPIC 2

Tell about your favourite film

- The name of the film

=> It's Boy Hood

-What kind of film is it ?

=> It's a school life film ( phim học đường)

-What is its plot ?

=> It's about school life and basketball competition between two schools

-Who does it star ?

=> It stars TFBOYS

-What have critics said about it ?

=> Crictics say it's a must see

TOPIC 3

Tell about a festival you attended

- What's the name of festival ?

=> It's Tet

- Where was it plot ?

=> It held everywhere in Viet Nam

- When was it held ?

=> It held in late January or early February

- Why was it held ?

=> It held to welcome the new year with the hopes for better things in the year to come

- How was it held ?

=> Vietnamese people do many activities to celebrate it such as cleaning and decorating their houses,cooking traditional food, visiting relatives and friends or going to the pagodas to pray health,happiness,....

TOPIC 4

Tell about sources of energy

- How many types of energy sources ?

=> There are two types of energy sources

- What are they ?

=> They are: renewable and non-renewable

- List some sources that are renewable. What are their advantages and disadvantages ?

=> some sources that are renewable: wind,solar,hydro,biogas,....

- List some sources that are non- renewable . What are their advantages and disadvantages ?

=> some sources that are non- renewable : coal,oil,petrol,....

TOPIC 5

Think a future means of transport

- What will it look like ?

=> It will look like a big magic box

- What kind of energy will it use ?

=> It will use solar energy

- Where can people use it ?

=> People can use it everywhere

- How fast can it travel ?

=> It can travel at 1570 kph

- How many people can it transport ?

=> It can transport 21 people

There are two kinds of energy in our life. They are renewable and non-renewable sources of energy. The non-renewable energy sources include oil,coal,natural gas,... The renewable energy sources include wind, solar, biogas, hydro,... Therefore, we should use more renewable energy than non-renewable ones in the future, because the non-renewable energy sources produce a lot of carbon dioxide. That's bad for the environment, and these energy sources are going to run out soon. The renewable energy sources are abundant, cheap, clean and they're eco-friendly. They will last forever.

Renewable energy comes from a source that will not deplete. Two common examples of this type of energy are solar power and wind power. Geothermal power, hydropower, biomass, and tidal power are additional forms of renewable energy that produce power for our planet right now.

The primary advantage of renewable energy is that fewer potentially harmful emissions are released into the atmosphere. Although fossil fuels are used to create the products that allow for this power to be produced, most forms of renewable energy can become carbon neutral in 5 years or less.

The disadvantage of renewable energy is that it can be costly. Although wind power and solar power have become cost-competitive with coal-fired power and nuclear power in some communities, some forms are not cost-competitive globally yet when the cost per kilowatt hour is compared. In 2015, the lifetime cost per kilowatt hour of conventional coal was 9.5 cents, while the cost of offshore wind was 15.8 cents.

There are additional advantages and disadvantages of renewable energy to consider as well.

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