Grade 8     

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. 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.

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

3. Defence Against Disease Understand how microbes can enter the body and how the body tries to prevent this from happening.

4. Micro-organisms Learn the different types of microbes that can cause disease.

5. Photosynthesis Learn that plants make food by photosynthesis and the word equation that represents it.

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

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

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

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

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

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

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

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

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

15. 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.

16. 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.

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

18. 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.

19. 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.

20. 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.

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

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

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

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

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

26. 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.

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

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

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

30. Forces Learn what forces are and what they can do.

31. Mass, Weight and Gravity Learn that the weight of an object on the Earth is the result of the gravitational attraction between its mass and that of the Earth, and know that weight is a force so is measured in newtons.

32. Unbalanced Forces Learn that unbalanced forces change the speed or direction of movement of objects and that balanced forces produce no change in the movement of an object.

33. Balanced Forces Learn that balanced forces produce no change in the movement of an object.

34. Stretching Materials Learn that extension is proportional to load, within the elastic limit of a material.

35. Friction Find out how frictional forces, including air resistance, can affect the motion of an object.

36. Useful Friction Learn how frictional forces can be useful.

37. Stopping Distances Find out how to calculate the total stopping distance of a car.

38. Factors Affecting Braking Distance Understand that the braking distance of a car depends on its speed and other factors which affect the frictional forces needed to stop the car.

39. Factors Affecting Thinking Distance Understand that the stopping distance of a car depends on the alertness of the driver as well as its speed and frictional forces.

40. What Forces Do Learn what forces can do and how to measure them.

41. Pivots and Levers Learn that forces can cause objects to turn about a pivot and that the turning effect of a lever depends on the force and its distance from the pivot.

42. Clockwise and Anticlockwise Moments Learn that a moment is a turning force, which can be clockwise or anticlockwise.

43. Day and Night Understand how the movement of the Earth causes day and night and the apparent daily movement of the Sun.

44. The Seasons and Day Length Understand how the tilt and movement of the Earth causes the seasons.

45. Year Length Learn that a year is the time it takes for a planet to orbit the Sun and that a year on Earth is 365,25 days. Understand why planets further from the Sun have a longer year.

46. Gravity Learn that gravity is a force of attraction which acts on Earth towards the centre of the planet, and that the size of the force of gravity depends on the mass of each object and the distance between them.

47. Gravity and the Solar System Understand how the movement of planets around the Sun is related to gravitational forces.

48. Satellites Learn that the Moon is a natural satellite of the Earth and how satellites stay in orbit around the Earth.

49. Uses of Satellites Learn some uses of artificial satellites.

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