T-lvl 1 SI units, Galvanic scale, expansion and heat capacities

Match the following units with their corresponding physical quantities.

• Electric Current

• ampere (A)

• Mass

• metre (m)

• Time

• second (s)

• Length

• kilogram (kg)

Match the following symbols with their meanings.

• Symbol for density

• ρ

• Symbol for velocity

• A

• Symbol for area

• V

• Symbol for volume

• v

Match the following units with their corresponding physical quantities.

• Power

• Pascal (Pa)

• Force

• Watt (W)

• Energy

• Newton (N)

• Pressure

• Joule (J)

Match the following descriptions with their corresponding formulas.

• Formula for the area of a circle

• pi x radius²

• Area of a square

• volume × shc × temperature difference

• Formula for heat energy

• length × width × depth

• Formula for the volume of a cuboid

• width × length

Match the following formulas with their corresponding concepts.

• Work done

• lumens per m²

• Illuminance

• mass × acceleration

• Power in electrical circuits

• volts × amperes

• Newton's Second Law

• force × distance

What is the definition of atmospheric pressure?

• Force exerted by the weight of air above the Earth's surface

• Force exerted by water on the Earth's surface

• Force exerted by the sun on the Earth's surface

• Force exerted by the moon on the Earth's surface

What is the specific heat capacity of water used in the example?

• 4.2 kJ/kg/°C

• 2.4 kJ/kg/°C

• 6.2 kJ/kg/°C

• 3.2 kJ/kg/°C

What happens to metals during corrosion?

• They deteriorate through chemical or electrochemical reaction

• They become stronger

• They become more flexible

• They become transparent

Which of the following is NOT a use for ceramics?

• Electrical insulators

• Firebricks

• Insulating cables

• Worktops

According to the electromotive series, which metal will corrode faster: copper or magnesium?

• Copper

• Magnesium

• Both corrode at the same rate

• Neither corrodes