2021 end of term 2 test Memo

Bedfordview Primary School 2021 TERM 2 TEST - Memo Name: Grade : 4 Subject: Natural Science and Technology Examiner: Mrs Driver Date: 29 June 2021 Moderator: Mr Nash Time Allocation: 60 Minutes 1 2 3 4 5 6 7 % 0 – 29% 30 – 39% 40 – 49% 50 – 59% 60 – 69% 70 – 79% 80 – 100% 40 INSTRUCTIONS 1. An extra 10 minutes will be provided for reading. 2. Write neatly and legibly. 3. Answer in the spaces provided. 4. This paper consists of 6 pages. Question Analysis Question Question Question Question Question Question Question Question TOTAL 1 2 3 4 5 6 7 8 40 5 6 4 5 4 2 8 6 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Section A Question 1: Fill in the missing words in the spaces below. Use the words in the word bank to help you. [5] far apart tightly solid ice solidifies heats states of matter clouds gas evaporates wax melts condenses freezing water liquid precipitation water vapour 1.1) Solids, liquids and gases are known as __states of matter √________________________. 1.2) Melted wax __solidifies √________________ when the heat is taken away. 1.3) The Sun __heats √______________ the water on earth and changes it into water vapour. The water vapour cools and condenses into _clouds √_________________. 1.4) Rain, hail, sleet and snow are known as _precipitation √_______________ 1 | Natural Science and Technology PAGE TOTAL:

Question 2: Compare the states of matter in the table below: [6] Solid Liquid Gas Write an example of Ice, book, desk any Water, milk any Oxygen, water vapour each state of matter. acceptable answer √ acceptable answer √ any acceptable answer √ Draw the particles showing each state of matter. Question 3: [4] olids, liquids and gases change state when they are heated or cooled. The arrows show when heat is added and taken away. Look at the picture below and label the processes shown. . 1)__condensation √______________ 2)__evaporation √_______________ 3 3)_solidification / freezing √________ COLDER 4)__melting √___________________ 4 HOTTER Question 4: Match the object in column 1 to its property. [5] Object Property 4.1 Baby toy a) Light 4.2 School bag b) Flexible 4.3 Mop c) Absorbent 4.4 Weights d) Soft 4.5 Trampoline e) Heavy 4.1) ___d √______ 4.2) _____a √____ 4.3) ___c √______ 4.4) __a √_______ 4.5) ___b_√____ 2 | Natural Science and Technology PAGE TOTAL:

Section B Question 5: [4] Read the following paragraphs and answer the questions that follow in full sentences. Cotton: Cotton comes from the cotton plant. The cotton plant produces a pod that bursts open and forms a ball of cotton. These fibres are coloured and woven into fabric (cloth) that can be made into clothes. This fabric is strong but creases easily. It is cool and comfortable to wear in summer. Wool: Wool is made from animal fibres, animals like sheep, goats and rabbits. It is spun into fibres which can be coloured and made into wool fabric or used for knitting. Wool is a weak fabric but it does not wrinkle easily. It is comfortable and warm, but expensive. Polyester: Polyester is made from manufactured fibres. The fibre can be woven into fabrics with different colours and patterns. It is a strong fabric that does not wrinkle easily. It can make your body feel hot and clammy. An example of another manufactured fibre is nylon which is made from liquid coal or oil. 5.1) Read the paragraphs again and name the fabric that would be most suitable to wear in summer and explain why. ___Cotton is the fabric that would be most suitable to wear in summer because it is cool and Comfortable. √√________________________________________________________________ ____________________________________________________________________________(2) 5.2) What property are you looking for in fabric that will be worn in winter? __The property of wool must be warmth and comfort (warm and comfortable)_ √______________ ____________________________________________________________________________(1) 5.3) What are the properties of polyester? ____Polyester is strong and it doesn’t wrinkle easily__√______________________________________________________________________ ____________________________________________________________________________(1) Question 6: Look at the picture below and answer the following questions. [2] 6.1) What indigenous structure are these men building? __Rontabile / rondavel / Xhosa homes / Ungquphantsi √_________________________________________(1) 6.2) What are they using to make the roof strong? ___The struts form a framework for the roof__√______ ____________________________________________ ____________________________________________________________________________(1) 3 | Natural Science and Technology PAGE TOTAL:

Question 7: Look at the room below. It is full of manufactured products. Complete the table below by filling in the raw materials and what they are manufactured into. [8] Raw Material Manufactured material Example: Cotton Curtains Wood Coat rack; chairs / table / window frame Glass / clay Window / china tea cups and flower bowl Rubber / paper Ball / lunch packet Wool / leather Scarf / bag / jacket / couch 4 | Natural Science and Technology PAGE TOTAL:

Section C Question 8: [6] The picture below shows a gorge (steep cliffs on either side of a river). Please answer the questions below. Questions 8.1 – 8.2 have to do with this picture. 8.1) What structure would get people from one cliff to the other side, and what type of structure is this. Structure:__bridge__√____________________________________________________________ Type of structure:__frame structure__√____________________________________________ (2) 8.2) Name 2 ways in which you could strengthen this structure. _____The bridge could be strengthened by using struts / guy ropes / triangulation___√√_____ ______________________________________________________________________________ ____________________________________________________________________________(2) 8.3) There are other materials that can be strengthened. Name the material and how you can make it stronger. __Paper can be rolled or folded / powder cement can be mixed with water and stones to make it strong concrete / any appropriate answer_√√ (2) Please go back and check your work. Read every question and check your answer. GOOD LUCK! 5 | Natural Science and Technology PAGE TOTAL:

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