<u>The Earth revolves around its axis</u>, <u><em>this rotating movement is called rotation</em></u>, <u>lasts 23 hours with 56 minutes and 4 seconds and is called sidereal day</u>.
<u>The Earth also revolves around the sun</u>, <em><u>this movement is called revolution or translation</u></em>, <u>this movement of translation is done every 365 days and 6 hours approximately, a year</u>.
Density of steel is more than that of Aluminium and Wood. So, its mass is greater than the solids made of Aluminium and Wood. Inertia depends on the mass of the object hence, Steel has the highest inertia.
