Learn about how electricity flows from this video.
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PEOPLE POWER
Humans burn energy when they exercise. Food is mainly made up of water and when it comes out as waste, it weighs less. A kilocalorie is a measure of energy.
Mice eat about one third of their body weight everyday to stay alive.
In the human body, enzymes break down complex molecules into sugar called glucose. Then the glucose goes into the blood. An enzyme is a chemical substance. We can ‘supercharge’ ourselves using sugar. Human fat looks orange and it produces a lot of energy.
The human body is electric. A single nerve firing produces a bit of electricity. We have more that 80 billion nerves in our brains. Human energy can be used to power everyday things like light and blenders. Caffeine has a strong effect on the body, it gives the body energy. Caffeine is a drug put in tea and coffee. People burn energy even when they do nothing.
ENERGY
I found the Christmas lecture on Energy very interesting and informative. Energy is the ability to do work. Lights, cameras and air conditioners consume energy.
When a candle is lit, the wick doesn’t burn but the wax does. Power is how fast energy is transferred. Energy comes in different forms; like motion, heat, light and sound. Electrons always take the fastest route.
Tesla coils produce energy that look like lightning(sparks). Urine can actually be converted into energy!!! Power stations can be viewed as giant kettles with steam. The steam is used to make electricity.
Turbine energy gets converted into heat, then into motion and finally into electricity. Fossil fuel like coal, gas or petroleum are also useful sources of energy.
Albert Einstein derived the equation; E=mc2
Where, E= unit of energy, m= unit of mass and c2= speed of light squared. For nuclear fusion to occur, the fuel needs to be extremely hot. Plasma (hot ionized gas) is the fourth state of matter. Solar panels absorb the sun’s ray but they can’t capture all wave lengths of light.
LECTURE 1.
In the first lecture I learnt that air conditioning, cameras and lights all take up energy. You could call them energy guzzlers. On the giant meter, I saw the lecture theatre needed 21,567 AA batteries to power everything. The last thing I learnt in the first lecture, was that when energy is converted, you could use it for work.
LECTURE 2.
In the second lecture I learnt that everybody contributes by generating energy. When you move around a lot your heart rate increases, so I enjoyed it when they stood up and danced. We also learnt that all food has different components , so they would use different amounts of energy.
LECTURE 3.
In the third lecture, I came to understand that the battery helps to power lots of different things. I also learnt that you would need lots of batteries to power your phone for a whole year. It is much better to have smaller batteries that can store lots of energy. I was intrigued by the voltaic pile and what they was used years ago. I was surprised that you could have a lemon battery even more so when I saw that so many lemons could produce lots of energy. I was very excited when it went into the Guinness book of records.
Today , I have learnt some fascinating facts about electricity .
These are some of the facts that I found interesting :
-Electricity is a charged atomic particles ,electrons.
-Electrons have a negitive charge, they travel out of the negitive side and are attracted to the plus end.
-If you touch a metal conductor (mostly copper) on each end then the electrons will flow through.
-A battery is a chemical device .
DANGERS OF ELECTRICITY:
-I have learnt that high volts are VERY dangerous and could possibly burn your hands.
-Also never put your hands near a volt or a circuit.
I have learnt electricity runs quickly through materials.Electricity is charged by atomic particles.A problem with a short circuit is it uses battery up very quickly. Electrons move in high speed around neutrons.You should never try and make a short circuit or put your hand near a socket.If electrons are to close together they will push each other away.
I have learnt that short circuits are dangerous because it lessen’s the battery’s energy and gets hot very quickly .This is bad !!!!!!!
I have also learn’t that you should never put your hand near a circuit because it could cause a explosion!
Electricity is very useful in our world .I have learn’t a lot about electricity !!!
I know that electricity runs through materials very quickly like foil.You can make circuits by getting batteries,wires and a battery holder. You can light up a bulb by connecting wires to the battery holder which has a battery inside and then you connect the ends of the wires to the bulb holder which has the bulb inside and then it should light up.
I have learnt electricity is charged atomic particles. Also if you create a short circuit the conductor could over heat if this happens then you could burn yourself. Another problem with short circuits is it uses up the battery ever so rapidly.
I have learnt that electricity is the movement of charged atomic particles called electrons. A battery is a chemical device designed to create the force needed to move electrons. Conductors, metals like silver,copper and gold provide a path for electrons to flow in. Touch a metal conductor to each end of the battery and electrons begin to flow from minus to plus. Volts is the measure of the force moving electrons. Flowing electrons is called current. Current is measured in amps. I have also learnt that never make a short circuit or experiment with anything that plugs into a wall outlet as this ranges from 120-240 volts which is extremely dangerous.
I have learnt that a socket has a staggering 120 volts which is enough to kill a human.Also, I know that flowing electrons are measured in amperes,also known as amps.1 amp means that a colossal 6240000000000000000 electrons flow through a circuit per second.The centre of an atom is called a nucleus and the nucleus has 2 different types of particles.One is called a Proton,or several Protons and the other is called a Neutron,or several Neutrons.Protons have a positive electric charge while Neutrons have no electric charge whatsoever.Also a circuit is made up of a flow of electrons.
I now know that if you have wires attached to a battery this will make a complete circuit but if you take one wire off it will now be an open circuit. Switches do this when they turn lights on and off.
I’ve learnt that electricity is the movement of charged atomic particles called electrons and that 1 amp means that 6240000000000000000 electrons flow through the circuit per second.A short circuit is when you attach a short wire going from the negative side straight to the positive side.The wire could then get very hot, you could burn yourself and the battery would lose energy very quickly.A parallel circuit is when electrons can flow through 2 paths and there are 2 or more bulbs. If a bulb is taken out of the circuit the others will remain lit up. A series circuit is when there is only 1 path that electrons can flow through but there can be more than 1 bulb. If a bulb is taken out, the remaining bulbs will all turn off.
I have learnt that electricity is very useful. It can also be very dangerous. A high number of volts exposed can be extremely dangerous! Never; put your hand near a socket, turn on alight with wet hands, and do not make a short circuit!
I have learnt that it is fine to handle a AA battery as it holds only 1.5 VOLTS but sockets contain a massive 120 VOLTS (that’s enough to kill a person). An atom is made up of a nucleus and several electrons. The Nucleus includes protons and neutrons. Protons with a positive electric charge and Neutrons with no charge at all. If you rub a balloon against
a piece of fabric, then hover the balloon above ripped-up paper the paper will stand up and move around.
I understand that there are many circuits such as a series circuit, parallel circuit and short circuit. Short circuits are dangerous because they get very hot and quickly lessen the battery’s energy. I know that flowing electrons are called current and are measured in amperes (amps) and the force moving the electrons is called voltage and is measured in volts. Also 1 amp is equal to 6240000000000000000 electrons per second. Another thing is that the centre of an atom is called a nucleus and the nucleus contains two types of particles. These are called protons, which have a positive electric charge, and neutrons, which have no electric charge. Electrons exist outside the nucleus.
I have learnt the importance electricity but also how it can be dangerous to us.
I understand that electricity has been found out and produced over the recent years and that electricity consists of very different and complicated things. There are atoms and volts which consist in the main bulb. to make an electricity circuit you need to have a battery holder, crocodile clips, a bulb, wires and a plug to plug your wire in. this helps your bulb to light and you could add a fan or buzzer. You have to be very careful with electricity as you could get electrified if you aren’t careful. there are many others things you could suffer from and mainly high voltage or watts could cause this(50 watts).
A circuit is a flow of electrons. I have also learnt that negative electrons to positive is called voltage. It is measured in volts. I have also learnt that current is measured in amperes which in abbreviation it is called amps.