physics

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Slide 1: Diapositive
PhysicsLower Secondary (Key Stage 3)

Cette leçon contient 21 diapositives, avec quiz interactifs et diapositive de texte.

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physics

Slide 1 - Diapositive

What is an insulator?
A
A material that does not conduct electricity
B
A type of wire
C
A material that conducts electricity
D
A device used in electrical circuits

Slide 2 - Quiz

Which of the following materials is a good insulator?
A
Rubber
B
Aluminum
C
Copper
D
Silver

Slide 3 - Quiz

What is the primary purpose of an insulator in electrical systems?
A
To prevent the flow of electricity and protect against electric shocks
B
To generate electricity
C
To enhance the flow of electricity
D
To store electricity

Slide 4 - Quiz

Which of the following is not an example of an insulator?
A
Glass
B
Plastic
C
Copper
D
Wood

Slide 5 - Quiz

Why are insulators important in power transmission lines?
A
They generate electricity
B
They prevent the loss of electrical energy through leakage
C
They reduce the voltage in the lines
D
They increase the conductivity of the wires

Slide 6 - Quiz

What is thermal conductivity?
A
The ability of a material to conduct heat
B
The ability of a material to absorb sound
C
The ability of a material to reflect light
D
The ability of a material to conduct electricity

Slide 7 - Quiz

Which of the following materials has the highest thermal conductivity?
A
Glass
B
Copper
C
Rubber
D
Wood

Slide 8 - Quiz

Which unit is used to measure thermal conductivity?
A
Kilograms
B
Meters
C
W/mK (Watts per meter Kelvin)
D
Celsius

Slide 9 - Quiz

Which material has low thermal conductivity and is often used as an insulator?
A
Aluminum
B
Copper
C
Fiberglass
D
Steel

Slide 10 - Quiz

True or False: Thermal conductivity increases with temperature.
A
False
B
True

Slide 11 - Quiz

What is double glazing?
A
A type of window with four panes of glass
B
A type of window with three panes of glass
C
A type of window with two panes of glass
D
A type of window with one pane of glass

Slide 12 - Quiz

What is the purpose of double glazing?
A
To promote air circulation
B
To increase noise pollution
C
To improve energy efficiency and reduce heat loss
D
To enhance visual aesthetics

Slide 13 - Quiz

What material is commonly used for the frames of double glazed windows?
A
Aluminum
B
Wood
C
uPVC (Unplasticized Polyvinyl Chloride)
D
Steel

Slide 14 - Quiz

Which of the following is not a benefit of double glazing?
A
Reduced condensation
B
Increased vulnerability to break-ins
C
Improved sound insulation
D
Enhanced security

Slide 15 - Quiz

What is the recommended minimum gap between the two panes of glass in double glazing?
A
8mm
B
20mm
C
12mm
D
16mm

Slide 16 - Quiz

What is the process by which heat is transferred through direct contact?
A
Convection
B
Conduction
C
Radiation
D
Evaporation

Slide 17 - Quiz

Which type of heat transfer occurs due to the movement of fluids?
A
Conduction
B
Radiation
C
Condensation
D
Convection

Slide 18 - Quiz

What is the transfer of heat through electromagnetic waves called?
A
Radiation
B
Conduction
C
Sublimation
D
Convection

Slide 19 - Quiz

Which type of heat transfer involves the phase change of a substance?
A
Latent heat transfer
B
Adiabatic heat transfer
C
Heat of fusion
D
Sensible heat transfer

Slide 20 - Quiz

What is the unit of measurement for heat transfer?
A
Pascal
B
Kelvin
C
Watt
D
Joule

Slide 21 - Quiz