Now that we have studied explanation texts. Can you write your own about an electrical item you might find in a home. Remember your key features.
WAGOLL
How does a kettle work?
When you plug the kettle into an electrical outlet, a large electric current flows into the heating element. The element’s resistance, the tendency any material has to stop electricity flowing through it, turns the electrical energy into heat. In other words, the element gets hot. Kettles are among the simplest of household appliances. Lift the lid and peer inside and you’ll see, at the very bottom of the water container, a coil of thick metal called the heating element.You can boil water in all kinds of ways—even in a simple pan on an open fire or stove—though an enclosed kettle is usually much faster: it stops heat escaping, allows the pressure to rise faster, (remember that water boils when its saturated vapor pressure equals atmospheric pressure), and helps the water to boil more quickly.
Super quick response – prize box! A very good explanation text eg: formal, contains technical vocabulary, starts with a question, follows simple steps.
Can you get time conjunctions in here? How can we include a passive sentence? Remember to answer your title in the closing paragraph. Very good effort. Mrs Beesley
How the Telephone Works.
When a person speaks into a telephone, the sound waves created by his voice enter the mouthpiece. Within the mouthpiece there is a microphone that converts the sound waves into an electrical signal. This signal is transmitted to the telephone of the person they are talking to. In the earpiece of the receiving telephone is a speaker. This speaker converts the received signal back into sound.
The first telephone was invented by Alexander Graham Bell using a collection of wires and bits and bobs. The first words spoken into a telephone were ” Mary had a little lamb”.
In the 21st century, mobile phones can do more than just call people such as texting. Texting works like this.
When a message is sent, it first must go through the nearby tower and then the SMS centre. The SMS tower receives the message and sends it to the tower closest to the location of the cell phone and then on to its destination.
Well done Thomas, you certainly understand this genre. I can hear your voice as I read this. Great work.
Mrs Beesley
How a Petrol Engine works.
A four stroke Petrol Engine works on the following principal: Suck, Squeeze Bang and Exhaust. This process can be better explained by understanding the different technical stages. Petrol is stored in the fuel tank and is delivered to the engine by a low pressure fuel pump. Once the petrol arrives at the engine it gets pumped to the Fuel injectors by a high pressure pump.
A typical engine has four cylinders, four injectors (one per cylinder), four pistons, one crank shaft and two types of valve per cylinder (Inlet and Exhaust valves) and a Cam shaft. Each piston is connected to the crank shaft by a connecting rod (con-rod). These pistons move in turn within each of the four cylinders as the crank shaft rotates within the engine block and are timed perfectly to provide their desired function.
The first stroke starts with a piston at the top of its cylinder. As this piston begins to move down the cylinder, a vacuum is created above the piston. The cam shaft allows the inlet valve to open. This in turn allows the air and petrol to rush inside the cylinder. This is called the “Suck” stroke. The second stage is the “Squeeze” stroke, the piston is now at the bottom of the cylinder, the inlet valve is now closed and the piston starts its return journey to the top of the cylinder. As the piston lifts up it compresses the air and fuel above it. This fuel and air combination is under extreme pressure as the piston reaches its upper most position. Once the piston is at the top, the spark plug releases an electric charge that ignites the fuel. This spark causes the fuel to explode and sends the piston back to the bottom of the cylinder at a very fast speed. This is known as the “Bang” stroke. The final stroke removes the burnt fuel gases from the cylinder on the next rotation. As the piston rises this final time, the exhaust valve opens and allows the waste gases to be pushed out through the exhaust ready for the four stage process to start again.
This sequence of events is replicated across all cylinders within the engine. The more cylinders an engine has results in the amount of power that the engine produces. This is measured as Break Horse-Power or BHP. The total volume of the combined cylinders denotes the capacity of the engine. For example a 4-litre V8 engine will have an individual cylinder capacity of 0.5 litres.
Fantastic Thomas. My dad is an engineer and has tried to explain this principle to me over the last thirty years. I think I understand it now, so your explanation text certainly worked for me. Prize Box!
Comments
fr4nc8s04
16 March 2019
Tap shoes
What are tap shoes and how do they work?
Tap dance is thought to have come from: African Juba dancing, English clogging, Irish step dancing, Native American stomp dancing and Spanish flamenco dancing. These dance styles have thought to influence the dance. However, African-American’s started tap dance. As a result of those African-American’s so long ago, I can enjoy tap just as much as they did.
Tap shoes (sometimes called two shoes and four taps) have hard soles and metal plates attached to the bottom of the shoe by the heel and the boul. The plates are attached to the shoes by screws that can be adjusted to change the sound. These make them perfect for the unique tap sound.
First, tap shoes were used in the United States of America where tap dance originated from. When tap shoes meet a hard surface, they create a noise. Lots of companies make tap shoes and some even make special ones. Some tap shoes have solid soles but the sound is a bit different than actual tap shoes.
That is how tap shoes work.
41642
17 March 2019
How does a volcano work?
At the bottom is the magma chamber that is where all the lava is stored, The magma chamber is directly below the volcano. Then the magma chamber leads to the main vent in the middle of the volcano, which then leads to other places.
Then you have a secondary vent going to the side of the volcano, the secondary vent is leading to the side of the volcano. Then there is the secondary cone which lets lava flow and is on the side of the volcano. After that you will have the crater of the volcano which is at the top of the volcano which is where the lava flows from. But then other things happen...
The ash condenses and then turns into ash clouds that are released before the eruption letting ash into the air and even precipitation falling (but this is no normal precipitation), it is ash falling down.
But even more often than that, volcanic rocks that are burning come tumbling down the side of the volcano.
Coast Guard CG
8 March 2020
How do you become Prime Minister? I would like to clarify this is the UK PM not one of another country. The journey up the political ladder to the glory of Prime Minister is a long and tough one. From your town council to the House of Commons a lifelong trip to the top.
Firstly, the vague start. The beginning differs between people and places but inevitably requires you to become an MP (Member of Parliament). You may have previously served at a local level in a town or village council or perhaps as Mayor. You may have been knighted by the queen for an exterior reason or jumped straight into the role. There are also county councils with their own situations. A council is divided by political parties - who play a larger role further on - such as: the Labour and Conservative parties.
Furthermore, to become an MP you have to win in a local election. If you are to run, if you wish to become an MP, then you should probably join a political party. But what is a “political party”? A political party is a group of politicians that believe in the same things. Over time, they have become essential to winning elections and have created almost a separate election at the same as the local one for the political party. Although it is still possible to win without joining a party, it is very difficult and historically impossible to become Prime Minister. Each MP represents a constituency or seat. This is the area they are voted in from.
Now you are an MP, your goal is to rise the ranks of your political party. The Prime Minister is the head of the political party with the most seats so if you are in the opposition (second largest) or another party than you cannot be Prime Minister until you become the largest party. The catch? There’s only a local / general election every four years. You will be sworn in by the queen less than a week after the election.
That is how you become Prime Minister.
JH :/
8 March 2020
How does a hoover work?
A hoover is an electric item used in the home or work to clean the dust and mess from the floor. A hoover is a type of vacuum cleaner.
The hoover works in the exact same way for every type of hoover. The hoover uses an electric motor that spins a fan causing the air pressure, sucking in the air and any small particles caught up in it. This air pressure is caused in exactly the same way as we suck up a straw. The air comes over the fan and passes the electric motor and keeping it cool.
The dirt is separated in a couple of ways depending on the type of hoover you've got. If the hoover has a bag the dropped into the bag. If it has a canister it spins the air around at a high speed, the dirt is thrown out to the side and gets dropped or collected. Our house is now clean.
JJ
15 March 2021
15/3/21
To get the oven started you need to plug it into an electrical socket like any other household appliance.
Inside an electric oven there are two electric heating elements one at the bottom and the other one at the top. The thermostat turns the heating element on and off to maintain the temperature which it has been set at.
On the front of the oven you have a dial for the temperature and a dial for cooking mode . The cooking mode dial means that you can have the top and the bottom of the oven on, there is another setting where you can have one of them on, some ovens may have a grill setting only and some ovens have a separate grill. Some ovens have a timer function for example you could set it for two hours and others self clean themselves and turn any dirt into dust.
RMat :)
15 March 2021
How does a electric iron work?
An electric iron's work is very easy to understand. It takes current from the mains and heats up a coil inside of it. Heat on an electric iron is really helpful but also it can burn you if it collects a lot of heat (no doubt). Most irons heat up to about 120 o C to 180 o C.
The heat then goes to the base plate. This is getting pressed on your clothes to get rid of creases. Therefore it helps it to smoothen and makes your clothing look nice.
Don't touch an electric iron when it is plugged in the socket, it will hurt.
EW
16 March 2021
How does a computer work
A computer is an electronic machine that processes information—in other words, an information processor: it takes in raw information (or data) at one end, stores it until it's ready to work on it, chews and crunches it for a bit, then spits out the results at the other end. All these processes have a name.
how does a digital clock work
In a digital clock, this is usually provided by using a crystal which is made out of glass. As an electric charge passes through the crystal, it will change shape slightly and make a very light sound. The sound which is heard at a regular frequency is then converted into an electronic signal.