Grade 9     

We're sure you and skoool will enjoy learning Natural Sciences!

Natural Sciences is about what things are made of, how they react with each other and how they change when they come together. React with skoool and revise the way you study Natural Sciences.

1. Organisation in Living Things Learn what forms tissues and organs and know some examples.

2. Cell Structure and Function Learn the names and functions of some of the structures found in plant and animal cells.

3. Plant Cells Learn the names and functions of structures found in plant cells.

4. Specialised Plant and Animal Cells Understand how different cells are adapted for their functions.

5. Specialised Cells in the Breathing System Understand how different cells are adapted for their functions.

6. Cell Fertilisation Learn that fertilisation in humans and flowering plants is the fusion of a male and a female cell.

7. Organ Systems Understand that different organs work together in an organ system, and learn the functions of different organ systems in the human body.

8. Preparing Slides of Plant Cells Learn how to prepare a slide of onion cells.

9. Preparing Slides of Animal Cells Learn how to prepare a slide of human cheek cells.

10. Using a Microscope Learn how to use a microscope correctly.

11. A Balanced Diet Learn the names and sources of food types needed in a balanced diet and the different uses of food in the body.

12. Malnutrition Learn about malnutrition and give some examples of diseases caused by malnutrition.

13. Food Tests Learn how to carry out chemical tests to identify starch, sugar, protein and fat in food samples.

14. Egestion Learn that water is reabsorbed from undigested food in the large intestine before it forms waste faeces that are egested.

15. The Female Reproductive System Learn the structure and function of the female reproductive organs.

16. The Male Reproductive System Learn the structure and function of the male reproductive organs.

17. Puberty Learn that changes in hormone concentrations result in the development of secondary sexual characteristics at puberty.

18. The Menstrual Cycle Learn about the changes that occur in a woman's body during the menstrual cycle.

19. Sexual Intercourse Learn what happens during sexual intercourse.

20. Human Fertilisation Learn that fertilisation is the fusion of the egg and sperm nuclei, and know what happens to the egg after fertilisation.

21. Pregnancy Understand the functions of the placenta and amniotic fluid during pregnancy.

22. Birth Learn what happens during the birth of a baby.

23. Respiration Learn that aerobic respiration is a chemical reaction that occurs in cells to release energy from glucose. Learn the word equation that represents it.

24. Comparing Respiration and Burning Understand the differences between aerobic respiration and burning.

25. Adaptations of the Alveoli Understand how the lungs are adapted for efficient gas exchange.

26. The Respiratory System Learn the structure and function of the respiratory system.

27. Mucous Membrane Learn how the mucous membrane lining the respiratory system helps to prevent infection.

28. Gas Exchange Learn that gas exchange is the absorption of oxygen from the air into the blood and the removal of carbon dioxide from the blood.

29. Experiments to Compare Inhaled Air and Exhaled Air Learn how to compare inhaled and exhaled air.

30. Differences Between Inhaled and Exhaled Air Understand the differences between inhaled and exhaled air.

31. Breathing Learn how the lungs are ventilated by breathing.

32. Chemicals in Cigarette Smoke Learn some effects that the different chemicals in cigarette smoke can have on the body.

33. Effects of Smoking on the Lungs Learn how smoking cigarettes can damage the breathing system.

34. The Circulatory System Learn the names of the different types of blood vessels, and that substances are exchanged between the blood and cells at capillary walls.

35. The Heart as a Double Pump Learn and understand that the heart is a double pump.

36. Structure of the Heart Learn the basic structure of the heart.

37. Compositon of the Blood Learn the components of blood and understand that many substances are transported dissolved in the plasma.

39. Blood Plasma Learn about some of the substances transported in the plasma.

40. Transport of Gases Learn how oxygen and carbon dioxide are transported around the body.

41. The Uses of Glucose Learn that the glucose made during photosynthesis can be respired or changed into a variety of chemicals by combining with other elements.

42. Organ Systems at Work Understand that different organ systems work together in a healthy organism.

43. Interdependence Learn how different organisms within a community depend on each other for their survival.

44. Habitats Learn how different habitats have different features which determine the organisms that can live there.

45. Studying Habitats Understand the observations and measurements that need to be made when studying a habitat.

46. Adaptations and Survival Learn how different organisms are adapted to survive in their habitat.

47. Seasonal Changes in Population Size Understand how some organisms are adapted to survive seasonal changes in their habitats.

48. Competition For Resources Understand that plants and animals will compete with each other if resources are limited.

49. Population Size Understand that the size of a population depends on the resources and space available, predators and disease.

50. Properties of Solids, Liquids and Gases Learn the properties of the three states of matter.

51. The Particle Theory Learn how to use the Particle Theory to explain the properties of solids, liquids and gases.

52. Change of State - Water Understand what happens when a substance changes state.

53. Melting and Boiling Point Understand what happens, in terms of energy and particle movement, when a substance changes state.

54. Metals Learn that elements vary widely in their physical properties and understand how the properties of elements can be used to classify them as metals.

55. Non-metals Learn that elements vary widely in their physical properties and understand how the properties of elements can be used to classify them as non-metals.

56. Uses of Some Elements Understand how the properties of some elements relate to how they are used.

57. Structures and Bonding - SIM To know that elements combine through chemical reactions to form compounds and that compounds contain different elements that are chemically bonded together.

58. Reaction of Metals with Oxygen and Water Learn how different metals react with oxygen and water and know how to name the products and identify patterns in these reactions.

59. Reaction of Metals with Acid Learn that metals react with acid to produce salt and hydrogen and find out how to test for hydrogen gas.

60. The Reactivity Series of Metals - SIM Learn how different metals react.

61. Acids and Alkalis Learn how to use indicators to classify solutions as acidic, alkaline or neutral.

62. Making a Salt Using an Insoluble Base Learn how to prepare a neutral salt sample from an insoluble base.

63. Making a Salt Using an Acid and an Alkali Learn how to prepare a neutral salt sample using an acid and an alkali.

64. Uses of Salts Learn some of the uses of different salts.

65. Acid Base Reactions Understand how different bases react with acids and write word equations for the reactions. Learn how to test for carbon dioxide gas.

66. Everyday Neutralisation Reactions Learn about everyday neutralisation reactions.

67. pH Scale Learn that pH is a measure of the strength of an acid or alkali and how to interpret the colours of universal indicator solution.

68. Series and Parallel Circuits Learn how to design and construct series and parallel circuits, and understand the differences between them.

69. Series Circuits - SIM Learn how to design and construct series circuits.

70. Parallel Circuits - SIM Learn how to design and construct parallel circuits.

71. Circuit Diagrams Learn how to draw simple circuits and the symbols used to represent them.

72. Electric Current Learn that current is the flow of electricity around a circuit and that the greater the resistance of the circuit, the less current flows.

73. Measuring Current - SIM Learn how to measure current with an ammeter.

74. Measuring Voltage - SIM Learn how to measure voltage with a voltmeter.

75. Fuses and Circuit Breakers Understand how a fuse protects a circuit and learn some uses of resettable circuit breakers.

76. Refraction Learn about refraction of light and know some examples.

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