1) What is the temperature? a) 23oC b) 24oC c) 25oC 2) What is the volume of the liquid? a) 24 cm3 b) 25 cm3 c) 24 cm2 d) 25 cm2 3) When reading volume of a liquid from a graduated cylinder we read from a) the top of the meniscus b) the bottom of the meniscus 4) Calculate the volume of the cuboid. a) 10 cm3 b) 10 cm2 c) 30 cm3 d) 30 cm2 5) What is the volume of the object? a) 17.1 mL b) 19.8 mL c) 2.7 mL d) 36.9 mL 6) If the mass of the stone is 200 g, what is it's density? a) 20 g/cm3 b) 2000 g/cm3 c) 10 g/cm3 7) What is the area? a) 150 cm b) 150 cm2 c) 25 cm d) 25 cm2 8) Calculate the speed. a) 500 km/hr b) 0.0125 km/hr c) 80 km/hr 9) What is the constant velocity for the second stage of the journey? a) 2 mph b) 4 mph c) 6 mph d) 8 mph 10) What is the acceleration for the second stage of the journey? a) 1 mph2 b) 2 mph2 c) 8 mph d) 4 mph 11) What is the net force in horizontal direction? a) 20 N right b) 20 N left c) 30 N right d) 30 N left e) 0 N 12) Is the object falling or rising? a) Net force is 200 N down ie falling b) Net force is 200 N up ie rising 13) The mass of the cart is 120 kg and the acceleration is 10 m/s2. What is the force being applied by the horse? a) 1200 N b) 12 N c) 130 N d) 0.083 N 14) A car travels 202 m/s. How far does it travel in 10 seconds? a) 20.2 m b) 2020 m c) 0.0495 m 15) A voltage of 6 volts is across a resistor and the current flowing through it is 0.5 amperes. What is the resistance? a) 12 Ohms b) 3 Ohms c) 0.083 Ohms 16) What is the current in a resistor of 50 Ω with a voltage of 12 V across it? a) 62 A b) 0.24 A c) 600 A d) 4.17 A 17) What is the voltage in a circuit with a current of 0.2 A flowing through a 40 Ω resistor? a) 8 V b) 200 V c) 0.005 V 18) What is the electrical power if the voltage is 230 V and the current 0.2 A? a) 1150 W b) 230.2 W c) 46 W 19) What is the percentage frequency of grass? a) 2% b) 3% c) 4% d) 6% 20) What is the efficiency of the light bulb? a) 90% b) 10% c) 100% d) 0% 21) What percentage of energy is wasted here? a) 3.2% b) 4% c) 0.8% d) 80% e) 20% 22) How much more efficient is the energy saving bulb? a) 10% b) 25% c) 65% d) 75% e) 90% 23) How many neutrons are in Boron? a) 5 b) 6 c) 10 d) 11 24) What is the ratio of carbon to hydrogen in methane (CH4) a) 1:1 b) 4:1 c) 1:4 25) What is the ratio of carbon to hydrogen to oxygen in glucose (C6H12O6)? a) 1:1:1 b) 2:1:2 c) 1:2:1 d) 2:2:2

Science Calculations Revision (3rd year)

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