9189 Scientific Principles P2 CJ

What temperature is 373K in the Celsius scale?

• 173°C

• 100°C

• -173°C

• -200°C

What does the symbol Δt represent?

• Difference in temperature

• Direct temperature

• Difference in pressure

• Direct pressure

When a gas changes state into a liquid, it is known as…

• Evaporation

• Condensing

• Sublimination

• Expansion

When a liquid changes state into a gas, it is known as…

• Evaporation

• Condensing

• Sublimination

• Expansion

What is atmospheric pressure at sea level?

• 0 bar

• 1.01 bar

• 10.1 bar

• 100 bar

At what temperature would water boil if subjected to 3 bar of pressure?

• 100°C

• 110°C

• 123°C

• 143°C

What term does the following sentence describe? The energy used to change the state of a substance which is released during evaporation.

• Sensible heat

• Total heat

• Latent heat

• Specific heat

Which of the following equations describes a Joule?

• 1kJ/s

• 1W/s

• 1Nm

• 1W/m

What is the specific heat capacity for water under atmospheric conditions?

• 1kj/kg/°C

• 3.14kj/kg/°C

• 4.18kj/kg/°C

• 9.18kj/kg/°C

Select the correct equation to calculate the linear expansion within a 10m length of copper pipe if it was heated by 30°C.

• 3.14 x 10 x 30

• 10 x 30 x 0.000016

• 30 / 10 x (0.000011)

• 4.18 x 30 x 10