Key Concepts of Physics

1\.1 Can you recall and use the SI unit for physical quantities?

**metre** - m

**kilogram** - kg

**second** - s

**ampere** - A

**kelvin** - K

**mole** - mol

**Frequency** - hertz - Hz

**Force** - newton - N

**Energy** - joule - J

**Power** - watt - W

**Pressure** - pascal - Pa

**Electric charge** - coulomb - C

**Electric potential difference** - volt - V

**Electric resistance** - ohm - Ω

**Magnetic flux density** - tesla - T

1\.2 Can you recall and use multiples and sub-multiples of units?

**Giga** - G - ×1,000,000,000

**Mega** - M - ×1,000,000

**Kilo** - k - ×1000

**Centi** - c - ÷100

**Milli** - m - ÷1000

**Micro** - μ - ÷1,000,000

**Nano** - n - ÷1,000,000,000

1\.3 Are you able to convert between different units, including hours to seconds?

Hour → second = ×3600

Second → hour = ÷3600

Km/h → m/s = ÷3.6

1\.4 Can you use significant figures and standard form where appropriate?

Numbers in standard form are written in the format, a×10^n, where a is a number 1 ≤ a