Phase 1 Scientific principles end of unit test

Describe an alloy

• Very light metal

• Mixture of 2 or more metals

• Aluminium

• Metal specifically used for electrical fittings

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

• 0.6

• 1

• 2

• 1.5

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

• Water table

• H2O

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

• 10m3

• 16m3

• 160m3

• 1600m3

1.    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?

• -10^o

• 0^o

• 2^o

• 4^o

    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

• Grundfoss

There are seven base units: name the unit for temperature which determines absolute zero as –273⁰C.

• Fahrenheit

• Celsius

• Degree

• Kelvin