Plumbing Scientific Principles Level 2 C&G Quizs

Calcium carbonate

• A mineral that is found in temporary hard water (limescale forming mineral)

• A type of vitamin essential for bone health

• A compound used in the production of glass

• A gas released during photosynthesis

Temperature that water is most dense at

• 0ºC

• 4ºC

• 10ºC

• 100ºC

Boyles Law

• If a set volume of gas is halved, its pressure doubles

• If a set volume of gas is doubled, its pressure halves

• If the temperature of a gas increases, its pressure decreases

• If the volume of a gas decreases, its temperature increases

Thermal conductivity

• of a material's ability to conduct heat

• of a material's resistance to heat flow

• of a material's ability to insulate heat

• of a material's thermal expansion

Electromotive force

• Amperes

• Ohms

• Volts

• Watts

Specific heat capacity

• The amount of heat required to change the temperature of 1 kg of a substance by 1°C

• The total energy contained in a substance

• The energy required to change the state of a substance

• The energy required to raise the temperature of 1 kg of a substance by 1°F

Latent heat

• Heat energy required to change material state without temperature change

• Heat energy that increases the temperature of a substance

• Heat energy released during a chemical reaction

• Heat energy that causes a change in pressure

Ohm's Law

• V = I x R (Voltage = Current x Resistance)

• V = I / R (Voltage = Current divided by Resistance)

• V = R / I (Voltage = Resistance divided by Current)

• V = I + R (Voltage = Current plus Resistance)

Sacrificial anode found in a hot water cylinder

• Aluminum

• Zinc

• Magnesium

• Copper

Thermal expansion

• Material size increase in relation to its temperature

• Material size decrease in relation to its temperature

• Material size increase due to pressure changes

• Material size decrease due to cooling