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# Test yourself now

High marks in science are the key to your success and future plans. Test yourself and learn more on Siyavula Practice.

 Physical Quantities Quantity Unit name Unit symbol Amplitude (A) metre $$\text{m}$$ Atomic mass unit (amu) u $$\text{u}$$ Average acceleration ($$\vec{a}_{\text{av}}$$) metre per second squared $$\text{m·s^{-2}}$$ Average speed ($$v_{\text{av}}$$) metre $$\text{m}$$ Average velocity ($$\vec{v}_{\text{av}}$$) metre per second $$\text{m·s^{-1}}$$ Charge (Q) coulomb $$\text{C}$$ Concentration (C) mol per decimetre cubed $$\text{mol·dm^{-3}}$$ Current (I) ampere $$\text{A}$$ Density (d) grams per centimetre cubed $$\text{g·cm^{-3}}$$ Displacement ($$\Delta x$$) metre $$\text{m}$$ Distance (D) metre $$\text{m}$$ Energy (E) Joule $$\text{J}$$ Frequency (f) Hertz $$\text{Hz}$$ Instantaneous acceleration ($$\vec{a}$$) metre per second squared $$\text{m·s^{-2}}$$ Instantaneous speed ($$v_{\text{av}}$$) metre per second $$\text{m·s^{-1}}$$ Instantaneous velocity ($$\vec{v}$$) metre per second $$\text{m·s^{-1}}$$ Intensity (I) deciBel $$\text{dB}$$ Magnitude of acceleration (a) metre per second squared $$\text{m·s^{-2}}$$ Mass (m) gram $$\text{g}$$ Molar mass (M) gram per mol $$\text{g·mol^{-1}}$$ Mole (n) mole $$\text{mol}$$ Period (T) second $$\text{s}$$ Position (x) metre $$\text{m}$$ Potential difference (V) Volt $$\text{V}$$ Pulse speed (v) metre per second $$\text{m·s^{-1}}$$ Resistance (R) Ohm $$\text{Ω}$$ Temperature (T) degrees $$\text{°}$$ Volume (V) decimetre cubed $$\text{dm^{-3}}$$ Wavelength (λ) metre $$\text{m}$$ Wavespeed (v) metre per second $$\text{m·s^{-1}}$$