1. 1. space
2. 2. Mass
3. 3. Solid, Liquid, Gas
4. 4. solid
5. 5. liquid
6. 6. gas
7. 7. atmosphere
8. 8. nitrogen, oxygen
9. 9. carbon dioxide, rare gases, water vapour
10. 10. Oxygen
11. 11. oxygen
12. 12. Oxygen
13. 13. Nitrogen
14. 14. carbon dioxide, photosynthesis
15. 15. photosynthesis
16. 16. Water vapour, water vapour
17. 17. rare gases
18. 18. wind.

Chapter 3: Water and Changes of State

1. 1. solid, liquid, gas
2. 2. gains, loses
3. 3. temperature, degree celsius
4. 4. liquid, ice, solid, gaseous
5. 5. freezing, melting, evaporation, condensation
6. 6. loses, liquid, solid, freezing, 0
7. 7. heat, solid, liquid, melting, gains,0
8. 8. boiling
9. 9. evaporation, temperature
10. 10. temperature, wind, exposed surface, humidity (a) higher, temperature (b) stronger, wind (c) larger, exposed surface (d) lower
11. 11. evaporation
12. 12. condensation

Chapter 4: Water Cycle

1. 1. Heat
2. 2. water vapour, evaporates
3. 3. condenses, clouds, rain
4. 4. soil
5. 5. roots
6. 6. seas, rivers, ponds, reservoirs
7. 7. water treatment, drinking, cooking, washing
8. 8. evaporate, water cycle
9. 9. state, never-ending

Chapter 5: Water A Precious Resource

1. 1. water
2. 2. cooking, cooling, cleaning, drinking
3. 3. -
4. 4. tap, wells, rivers, ponds, lakes
5. 5. harmful substances
6. 6. -
7. 7. Animals, plants, humans
8. 8. Littering and dumping, oil spills, deforestation
9. 9. Littering and dumping
10. 10. contaminates, harmful substances
11. 11. -
12. 12. water bodies
13. 13. oxygen, die
14. 14. sticks, clumped
15. 15. Deforestation
16. 16. removed
17. 17. pollution
18. 18. cloudy, sunlight
19. 19. -
20. 20. -
21. 21. Desalination
22. 22. -
23. 23. reducing, reusing, recycling

Chapter 6: Air & Respiratory System

1. 1. wind
2. 2. a) nitrogen, b) oxygen, c) carbon dioxide, water vapour and other gases
3. 3. oxygen, carbon dioxide
4. 4. Plants
5. 5. Breathing
6. 6. respiration
7. 7. nose, mouth, windpipe, lungs, air sacs
8. 8. diaphragm
9. 9. out, upwards, downwards
10. 10. mucus
11. 11. faster
12. 12. gills
13. 13. opposite
14. 14. blowholes
15. 15. oxygen
16. 16. stomata, stoma
17. 17. underside
18. 18. oxygen, Carbon dioxide, respiration
19. 19. Oxygen, photosynthesis
20. 20. animals, dissolve
21. 21. -
22. 22. photosynthesis, respiration
23. 23. ground
24. 24. skin

Chapter 7: The Circulatory System

1. 1. heart, blood
2. 2. oxygen, body cells, lungs
3. 3. Blood, water, food
4. 4. Kidneys, liver
5. 5. middle
6. 6. arteries, capillaries, veins
7. 7. oxygen
8. 8. carbon dioxide
9. 9. contraction, relaxaion
10. 10. pulse
11. 11. sixty, seventy
12. 12. increases
13. 13. food, oxygen, energy
14. 14. photosynthesis
15. 15. water, mineral salts, roots
16. 16. xylem, phloem
17. 17. roots
18. 18. phloem

Chapters 8 & 9: Energy and Light

1. 1. energy, see
2. 2. Sun
3. 3. own light
4. 4. fireflies, light, stars
5. 5. reflected
6. 6. mirror, mirror's, left, right
7. 7. Moon, Sun
8. 8. glass, plastic, transparent
9. 9. metal, clay/cardboard, opaque
10. 10. glass, tracing, cloth, translucent
11. 11. straight
12. 12. blocks
13. 13. opaque
14. 14. size
15. 15. smaller, bigger
16. 16. length, position
17. 17. east, long
18. 18. short
19. 19. west, long

Chapter 10: Heat

1. 1. energy
2. 2. Sun
3. 3. heat
4. 4. fuels, wood, charcoal, oil, petroleum, natural gases
5. 5. petroleum, diesel, kerosene, liquefied petroleum gas
6. 6. electricity
7. 7. water, steam, electricity
8. 8. electricity
9. 9. nichrome
10. 10. electrical iron, electrical kettle, electrical oven, rice cooker, bread toaster
11. 11. friction, heat
12. 12. heat
13. 13. Sun, fire, light bulb
14. 14. tungsten, heat, light
15. 15. cook, dry

Heat and temperature

1. 1. temperature
2. 2. touch
3. 3. thermometer
4. 4. rise, fall
5. 5. alcohol, colourless
6. 6. degrees celsius
7. 7. clinical
8. 8. mercury, silver
9. 9. 36.9
10. 10. rise
11. 11. warm

The chapter on heat will be tested right up till heat gain, heat loss only.

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