GMJ 9189 Phase 1 unit 303

Describe an alloy.

• Very light metal

• Mixture of two or more metals

• Lead Character in Horizon -Zero Dawn

• A metal - specifically used for electrical fittings

What is the specific gravity of butane in relation to air??

• 0.6

• 1.0

• 1.5

• 2.0

What material is a sacrificial anode typically made of ?

• Magnesium

• Lead

• Copper

• Aluminium

Name the process of protecting steel from rusting by coating it with a thin layer of zinc.

• Dezincification

• Electrolysation

• Galvanisation

• Oxidisation

What is the scientific name given for the rainwater cycle?

• Urban cycle

• Hydrological cycle

• Re-cycle

• Long wash cycle

When water is turned into steam, approximately how much will be produced from 1m³ of water?

• 10m³

• 16m³

• 160m³

• 1,600m³

What numbers identify the pH of pure water on the potential hydrogen scale?

• 12

• 1

• 6-7

• -273

At what temperature is water when at its most dense?

• –10⁰C

• 0⁰C

• 2⁰C

• 4⁰C

Which law states that the rise in pressure (of gas) would be inversely proportional to the rise in temperature?

• Boyle’s law

• Cole’s law

• Charles’s law

• The Gas law

Which ancient mathematician designed a simple screw-type mechanism which, when rotated, can lift water from a lower to a higher level?

• Einstein

• Archimedes

• Plato

• Grunfoss