2-10 Safety in the house (2.4)

Safety in the house 
(p. 87)
What you need:
- Textbook, writingbook, iPad
- Pen, pencil, geotriangle
- Calculator


Schoolbags in the cuboard
Phones in the phonebag
Bluetooth 
- ON
- VPN off
    Lesson today:
- Lesson goals (5 min)
- Practical activity 
    (5 min)
- Content (10 min)
- Working by yourself 
    (8 min)
- Corrections (5 min)
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Slide 1: Diapositive
NatuurkundeMiddelbare schoolhavo, vwoLeerjaar 2

Cette leçon contient 20 diapositives, avec quiz interactifs, diapositives de texte et 2 vidéos.

time-iconLa durée de la leçon est: 45 min

Éléments de cette leçon

Safety in the house 
(p. 87)
What you need:
- Textbook, writingbook, iPad
- Pen, pencil, geotriangle
- Calculator


Schoolbags in the cuboard
Phones in the phonebag
Bluetooth 
- ON
- VPN off
    Lesson today:
- Lesson goals (5 min)
- Practical activity 
    (5 min)
- Content (10 min)
- Working by yourself 
    (8 min)
- Corrections (5 min)

Slide 1 - Diapositive

                       Lesson goals:
- Distinguish between a circuit overload and a short circuit.

- Explain why an extention cord must be rolled out before use.

- Explain what the purpose of a fuse is.

Slide 2 - Diapositive

Practical activity
Take the photo of your consumer unit and 
distinguish between all the components.
timer
5:00

Slide 3 - Diapositive

Slide 4 - Diapositive

Fire
  • When more appliances are connected to a socket,  a greater current will be used (circuit overload).
  • If the current is more than 16 A - it becomes a fire hazard.
  • The input cable becomes too hot and could catch fire.

Slide 5 - Diapositive

Short circuit
When the current does not go through the appliance.

The current returns to the socket, without moving through the appliance.


Slide 6 - Diapositive

Extention cord
Must be fully unrolled, otherwise the heat can not escape.

Pmax

Pmin

Slide 7 - Diapositive

Fuses
An electric installation is protected from short circuits and overloads.  

Fuse
- Electronic
- Melt fuses

Slide 8 - Diapositive

Short circuit or circuit overload?
A
short circuit
B
circuit overload

Slide 9 - Quiz

short circuit or circuit overload?
A
short circuit
B
circuit overload

Slide 10 - Quiz

When more appliances are connected to one electric socket, the current in each appliance becomes less.
A
true
B
false

Slide 11 - Quiz

When too many appliances are connected to a socket, the fuse will switch the current off.
A
true
B
false

Slide 12 - Quiz

The electric wires going to a light fitting, heat up a bit when in use.
A
true
B
false

Slide 13 - Quiz

Due to the electricity being split over groups in an electric installation, more appliances can be connected.
A
true
B
false

Slide 14 - Quiz

Houses are equipped with fuses to protect it from short circuits and overloads.
A
true
B
false

Slide 15 - Quiz

Now do  63 up to 65 (p. 88)
WHEN YOU ARE DONE: Look at the youtube videos onthe next slide
timer
8:00
RULES:
  • Write in your writingbook


  • Use: Your textbook
  • No discussion

  • In 8 minutes we will discuss the answers

Slide 16 - Diapositive

Slide 17 - Diapositive

Slide 18 - Diapositive

Slide 19 - Vidéo

Slide 20 - Vidéo