Exercise Question 1. To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed? Answer: Yes, the process can be reversed. Question 2. You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be…
Exercise Question 1. Why do we need to separate different components of a mixture? Give two examples. Answer: When two or more substances are mixed together, they form a mixture. Components of a mixture should be separated because some components may not be useful or may spoil the useful component of the mixture. Examples: Question…
Exercise Question 1. Name five objects which can be made from wood. Answer: a) Table b) Chair c) Doors d) Desk e) Box Question 2. Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt Answer: Glass bowl and steel spoon are the objects which shine. Question 3. Match…
Exercise Question 1. Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute Answer: Natural: Wool, Cotton, Silk, Jute Synthetic: Nylon, Polyester Question 2. State whether the following statements are true or false: a) Yarn is made from fibres. b) Spinning is a process of making fibres. c) Jute is the…
Exercise Question 1. Name the major nutrients in our food. Answer: The major nutrients in our food are carbohydrates, proteins, fats, vitamins and minerals. In addition, food contains dietary fibres and water which are also needed by our body. Question 2. Name the following: (a) The nutrients which mainly give energy to our body. (b)…
Exercises Question 1: Do you find that all living beings need the same kind of food? Answer: No, all living beings do not need the same kind of food. Some animals eat plants as food, and they are called herbivores. Some animals eat other animals, and they are called carnivores. Some others eat food from…