webcamzzzz

web cams can be used in a lot of ways. one way it can be used is to chat online with somebody. but it only works if you have a camera on it. or to take pictures to send to your friend.  the videos you can post  on You tube. all you need to do is make a you tube account and then add the videos on you tube. me and my freind made a idiotic video for you to watch. and for a link to youtube www.youtube.com. I am sure that you've been their or and there and you can take screen shots or pictures. I'm the video that me and my friend made is a video of a video of a video of a video and I am sure is is funny. thank you for reading my blog hope to have good comments below

beacon power

I have built a beacon; it is used for special powers to help in battle. You can use it to run from enemies you can be speed, haste, resistance, jump boost, strength and regeneration. To activate the beacon you use diamonds emeralds, gold and iron. The beacon should have iron, gold, emerald or diamond blocks in the shape of a pyramid it does not matter what it is made out of it has the same power its height matters the pyramid it has to four blocks high. and other parts of the update is bats and another mob and corner stairs and new potions invisibility and night vision and you can see at night and the invisibility just explains itself so its a good update hope you get it hope you leave good comments below.

electricity and magnitism ch 2 vocab

• magnetic field

area surrounding a magnet through which magnetic force is exerted and that extends between a magnets north and south poles

• magnetic domain

group of atoms whose field points are in the same direction

• magnetosphere

a magnetic field surrounding earth that deflects most of the charged particles flowing from the sun

• electromagnet

magnet created by wrapping a current carrying wire around an iron core

• motor

device that transforms electrical energy into kinetic energy

• aurora

southern and northern lights that appear when charged particles trapped in the magnetosphere collide with earths atmosphere above the poles

• generator

device that uses a magnetic field to turn kinetic energy into electrical energy and can produce  direct current and alternating current

• alternating current

electrical current  that changes its direction many times a second

• transformer

 semiconductor device that can amplify the strength of an electric signal or act as a electronic switch

eletricity and magnetism book ch 1 vocab

• ion

positively or negatively charged atom

• static charge

buildup of electric charge on an object

• electric force

 attractive or repulsive force exerted by all charged objects on each other

• electric field

 field through which electric charges exert  a force on each other

• insulator

 material such as wood or glass through which electrons cannot move easily

• conductor

 material such as copper or silver through which electrons  can move easily

• electric discharge

 rapid movement of excess charge from one place to another

• electric current

 flow of charge either flowing electrons or flowing ions through a conductor

• circuit

 closed conducting loop through which electric current can flow

•  voltage

 a measure of how much electrical each electron of a battery has measured in volts

• resistance

 a measure of how difficult it is for electrons to flow through a material; unit is the ohm

• ohm's law

 relationship among voltage current and resistance in a circuit

• series circuit

 circuit that only has one path for a electric current to follow

• parallel circuit

 circuit that has more than one path for a electric current to follow

• electric power 

rate at which an electric appliance converts electrical energy into another form of energy usage is measured in electric meters in kilowatt hours

motion forces and energy ch 6 vocab

• temperature

 measure of the average kinetic energy of the particles in an substance

• thermal energy

energy  that all objects have that increases as the objects temperature increases the sum of kinetic energy and potential energy of the particles in a material

• heat

thermal energy transferred from a warmer object to a cooler object

• conduction

transfer thermal energy by direct contact occurs when energy is transferred by collisions of particles

• radiation

transfer of energy by electromagnetic waves

• convection

transfer of thermal energy by the movement of particles from one place to another in a gas or liquid

• conductor

material that transfer heat easily

• specific heat

amount of heat needed to raise the temperature of 1 kg. of a substance by 1 Celsius

• thermal pollution

increase in temperature of a natural body of water caused by adding warmer water

• heat engine

device that converts thermal energy into mechanical energy

• internal combustion engine

 \heat engine in which fuel is burned in a combustion chamber inside the engine

motion force and energy ch5 vocab

• energy

the ability to cause change

• kinetic energy

energy an object has due to its motion

• potential energy

energy stored in an object due to it position

• thermal energy

energy that all object have that increases as the objects temperature increases  the sum of the kinetic and potential energy of the particles in a material

• chemical energy

energy stored in chemical bonds

• radiant energy

energy carried by light

• electrical energy

energy carried by electrical current

• nuclear energy

energy contained in an atomic nuclei

work and simple machines motion forces and energy definitions for vocab chapter 4

• work
  work is done when a force exerted on a object on an object causes that to object to move some distance; equal to force times distance; measured in joules pg. 98

• power
  rate at which work is done; equal to the work done divided by time it takes to do the work measured in watts pg. 101

•  input force
  force exerted on a machine pg. 104
• output force
  force exerted by a machine pg. 104
• mechanical advantage
  number of times the input force is multiplied by a machine; equal to the output force divided by input force pg. 105
• efficiency
  equals the output work divided by the input work expressed as a percentage pg. 107