lunes, 21 de noviembre de 2011

THANKSGIVING DAY




THE LOST MARCHING BAND MEMBER



It’s Thanksgiving Day and a lost ____________ [name of an instrument] player is making his way through the Thanksgiving Parade route in _________________ [name of a city]. The parade chaos is making it difficult for him to reunite with the ___________ [name of a cereal] Marching Band. The musician has to make his way through _____________ [animal, plural], ___________ [vegetable, plural] and ___________________ [piece of furniture, plural]. He___________ [action verb, present tense] for miles, and wonders if he will ever find his ___________ [name of a toy]. After walking on his ___________ [body part, plural] for ___________ [large number] minutes, the band member spots the ________________ [name of a color] uniforms and the ______________ [type of hat, plural] that his band wears. “_______________ [A silly word],” he exclaims gleefully. Soon the ___________ [repeat the name of the instrument] player is back with his band. The band begins to play ___________ [name of a song] and merrily marches along.

viernes, 18 de noviembre de 2011

ELECTRIC COMPONENTS

Circuit Symbols

C

ircuit symbols are used in circuit diagrams which show how a circuit is connected together.

Component

Circuit Symbol

Function of Component

Wire

To pass current very easily from one part of a circuit to another.

Cell

Supplies electrical energy.
The larger terminal (on the left) is positive (+).

Battery

A battery is more than one cell.

Fuse

A safety device which will 'blow' (melt) if the current flowing through it exceeds a specified value.

Lamp

A transducer which converts electrical energy to light.

Motor

A transducer which converts electrical energy to kinetic energy (motion).

Bell

A transducer which converts electrical energy to sound.

Buzzer

A transducer which converts electrical energy to sound.

Push Switch

A push switch allows current to flow only when the button is pressed.

On-Off Switch


An on-off switch allows current to flow only when it is in the closed (on) position.

2-way Switch

.
A 2-way changeover switch directs the flow of current to one of two routes according to its position.

Resistor

A resistor restricts the flow of current.

Voltmeter

A voltmeter is used to measure voltage.

Ammeter

An ammeter is used to measure current.

Ohmmeter

An ohmmeter is used to measure resistance.

COMPLETE THE CHART http://www.kpsec.freeuk.com/