Match the following: Group A Group B (1) Velocity (a) litre (2) Area (b) kilogram (3) Volume (c) metre/second (4) Mass (d) kilogram/cubic metre (5) Density (e) square metre

For 1 , The rate of change of position of an object with respect to its direction of motion is called the velocity of an object. The SI unit used to measure the velocity is metre / second . Answer- 1 matches (c). For 2 , The space occupied by a surface in two dimensions is called the area. The SI unit to measure the area is the square metre. But some other subunits such as square centimetre or square foot are also used. Answer- 2 matches (e). For 3 , The total space occupied by an object in three dimensions is called its volume. The SI unit used to measure the volume is cubic metre. For measuring the volume of a liquid we use litre as the unit. 1 L = 1000 cm 3 Answer- 3 matches (a). For 4 , The measure of the total amount of matter present in an object or specimen is called the mass. The mass is a quantity that remains the same all over the universe. Mass is a scalar quantity and kilogram is its SI unit. Answer- 4 matches (b). For 5 , In general density is expressed as the mass per unit volume, its SI unit is kilogram / cubic metre . For very small objects it is taken in gram / cubic centimetre . The density of a liquid is less than the density of a solid. Answer- 5 matches (d). Group A Group B (1) Velocity (c) metre / second (2) Area (e) square metre (3) Volume (a) litre (4) Mass (b) kilogram (5) Density (d) kilogram / cubic metre