EXERCISES PAGE 131

EXERCISES PAGE 131

3.-
Power source: Is a component that give the power to the circuit.
Conductor: Is the component
Load device: Is the component that recive the enegy.
4.-
Some are: switchs and fuse.
theirs fuction is to control when the cicuit goes and when not.
5.-
Copper, silver and gold, are the most material are used.
6.-
9V÷0.3A=30R
30R÷2=15R 
  
7.- 
d

Circuits

In the circuits that we have done with the protoboard.

Compoents:

-Protoboard
-2 Wires
-3 Resistors of 220 Ω
-3 LED
-4,5 V / 9 V Batery

Parallel:
The LED were all with ligth. In this circuit if we remove somo elements the others continous with ligth.

Series:
The LED were all with ligth. In this circuit if we remove somo elements the others doesn´t continous with ligth.

 I was the fastest in the class (Because I "saw" the circuit in my maind) and I help my teacher spleaning to my team mates.
With the 4,5 V batery it ligth like with the 9 V batery becausewith the batery of 4,5 V the ligth recive the maximun.

Mechanisms

My Vocabulary of the UNIT 5

My Vocabulary

Gears = Engranajes

Gears Image

Levers = Palanca
Levers Image

Chain and sprockets = Cadena y dientes de engranajes
Chain and sprockets Image

Oscilating = Oscilación
Oscilating Image

Reciprocating = Corresponder/Devolver
Reciprocating Image

Fulcrum = Eje/Punto de apoyo

Fulcrum Image

Linear motion = Movimiento lineal

Linear motion Image

Rotary motion = Movimiento rotatorio
Oscilating Image

Pulley = Polea
Pulley Image

Leverage = Hacer palanca
Leverage Image

Rack and pinion system = Sistema de cremallera y piñón
Rack and pinion system Image

Worm screw = Tornillo sin fin
 Worm screw Image

Well = Pozo
Well Image

See-saw = Subibaja
See-saw Image

Oar = Remo
Oar Image

Pliers = Pinzas
Pliers image

Wheelbarrows = Carretilla
Wheelbarrow Image

Paper punch = Perforadora de papel
Paper punch Image

Elevator = Ascensor
Elevator Image

EXERCISES OF UNIT 5

Page 92

1.- Mass: Walls, dams, etc.                                    Truss: Include cranes, electricity pylons, etc.
     Frame: Building, etc.                                        Suspended: Suspended bridges, tents, marquees, etc.

2.- Electricity pylons
 

Page 93

3.- a) Force                                                           b) Strength

6.- The shell of a turtle is like a frame structure, it´s shape is of the half of a sphere, it´s made of bones and it will resist a withstand.

Page 94

7.- A rope with a weight hanging off it: Tension               A man pushing a cabinet: Compression

     Tighening a screw: Torsion                                            Cutting our fingernails: Shear
 
9.- The rubber band is made of pastic, it´s very elastic and it isn´t rigid at all.

Page 95

11.- Rigid:  Brick                                                    Deformable:  Clay
       Elastic:  Rubber band                                      Plastic:  Wrapping


12.- Plastic: Empty drinks and clay.

       Elastic: Balloon and catapult.
       Rigid: Window frame and door.








Frame structure:

Mass Structure:

 

3D Dessing

   Here it is my screenshot: