Month: July 2017

What is Science?:Sciene and TechnologyScience is the systematic study of things (including natural phenomena and human beings) around us.Technology refers to the study or activity of using scientific knowledge for practical purpose.Natural phenomena are things that happen in nature.Science is the study of natural phenomena. It is a continually expanding knowledge, derived from systematic researches by … Read more

Question 1:Conclusions of a scientific investigation can be influenced by scientific attitudes and values practised when carrying out experiments. What are the scientific attitudes and values that need to be practised by a student to make accurate conclusions? Answer:Be honest and precise in recording and approving data and have a positive attitude Question 2:What are … Read more

Question 1:Determine the density of the samples in the diagram below. Answer:A = 2 g cm–3, B = 2 g cm–3, C = 2 g cm–3 Question 2:Three types of liquid which do not mix, P, Q and R are poured together in a measuring cylinder as shown in the diagram. Which liquid is the … Read more

Activity 1.10:Aim: To investigate the relationship between the mass and density of various solids that have the same volumeMaterials and apparatus: Copper cube, iron cube, cork cube and wooden cube that have the volume of 1 cm3 each, water, basin, weighing balance.Instruction1. You are given four cubes that have the same volume as shown below.2. … Read more

Question 1:What is the reading of the micrometer screw gauge below? Answer:(a) 6.28 mm(b) 4.56 mm Question 2:Estimate the area of the drawing if every square represents an area of 1 cm × 1 cm or 1 cm2. Answer:24 cm2 Question 3:Chong is standing on a weighing balance. The value shown is 55 kg. What … Read more

Activity 1.9:Aim: To make a link between making estimation and taking the actual measurementMaterials and Apparatus: Pencil and rulerInstruction1. Measure the length of a pencil (p cm).2. Measure and record the length of a table using the pencil.Length of table = number of pencil × p cm.3. Measure and record the length of the table … Read more

Activity 1.8:Aim: To measure, use and handle instruments with higher accuracy correctlyMaterials and apparatus: Vernier calipers, micrometer screw gauge, digital electronic balance, digital ammeter, digital thermometer, clinical thermometer.Instruction1. Work in groups.2. Each group has to conduct the following measuring activities by using higher accuracy instruments.(a) Measure the thickness of the Form 1 Science textbook using … Read more

Question 1:List five physical quantities that you have studied. What is the S.I. unit and the symbol used for each of the quantities? Answer:Length – metre, m; Mass – kilogram, kg;Time – second, s; Temperature – kelvin, K; Electric current – ampere, A Question 2:Convert the values below.(a) 0.13 m = _________ cm (b) 18 000 … Read more

Activity 1.5:Aim: To identify physical quantities, values and S.I. units Instruction1. Look at the objects in Photograph 1.10. State the S.I. unit that you can use to measure the physical quantity of each object. Answer:(a) Metre(b) Kilogram(c) Kelvin

Question 1:Draw the following apparatus.(a) Flat-bottom flask (b) Conical flask (c) Boiling tube (d) Measuring cylind Answer: Question 2:(a) What is the meaning of the hazard symbols below?(b) State two examples of chemicals with the hazard symbol in (a)(i). Answer:(a) (i) Poisonous / toxic(ii) Irritant(iii) Flammable(iv) Explosive(v) Corrosive(b) Mercury and chlorine Question 3:Suhaimi sees a … Read more