Science Revision for SA1

P4 Science - Matter
Matter is anything that has mass and occupies space.

A solid
- has a definite shape
- does not take the shape of the container it is put into
- has a definite volume
- cannot be compressed
- does not take the volume of the container it is put into.

A liquid
- does not have a definite shape
- takes the shape of the container it is put into
- has a definite volume
- cannot be compressed
- does not take the volume of the container it is put into.

A gas
- does not have a definite shape
- takes the shape of the container it is put into
- does not have a definite volume
- can be compressed
- takes the volume of the container it is put into.

Water boils at 100 degrees celsius , melts at 0 degrees celsius and freezes at 0 degrees celsius.
Impurities such as salt or sugar can increase the boiling point of water and lower the freezing and melting points of water. Therefore, sea water boils at a temperature above 100 degrees celsius.
When water boils, air in the water escapes in the form of air bubbles. As such, plants and animals cannot survive in boiled water as there is no air in boiled water.
1. What is matter?
2. Name 7 non-matter.
3. What are the 3 states of matter?
4 What are the properties of (a) solids?
(b) liquids?
(c) gases?
5. How is a solid different from a liquid?
6. How is a solid different from a gas?
7. How is a liquid different from a gas?
8. What is the boiling point of water?
9. What is the freezing point of water?
10. What is the change in state when water evaporates?
11. What is the change in state when ice melts?
12. What is the change in state when water freezes?
13. List 3 ways in which an ice cube is different from water vapour?
14. What is observed water boils?
15. Does pure water or sea water boil at a higher temperature?


P5 Science - Water
1. Why is the water cycle important?
2. Name 3 ways to reduce the use of water.
3. What are the 3 main causes of water pollution?
4. Is there a gain of heat or loss of heat in the following processes?
(a) condensation
(b) evaporation
(c) boiling
(d) freezing
(e) melting
5. What is the boiling point of water?
6. What is the freezing point of water?
7. What is the change in state when water evaporates?
8. What is the change in state when ice melts?
9. What is the change in state when water freezes?
10. List 3 ways in which an ice cube is different from water vapour?
11. What is observed when water boils?
12. Does pure water or sea water boil at a higher temperature?


P6 Science - Energy
1. What is the energy conversion when an apple drops from an apple tree?
2. What are the factors to consider when choosing which material to use to make an item?
3. What is a force?
4. (a) Name a difference between friction and magnetism.
(b) Why is friction important? List as many points as possible.
(c) Why does friction sometimes become a problem?
5. Alex has 2 objects. How can he prove if they are both magnets?
6. Explain the energy conversion that takes place in a power station.
7. When a ball is dropped from a distance above ground, it bounces but not back to the original height where it was dropped.Why?

Revision for SA1

1. breadth=width
2. breath
3. breathe
4. necessary
5. necessity
6. necessarily
7. unnecessarily
8. occasion
9. occasionally
10. especially
11. exception
12. immigrate
13. emigrate
14. migrate
15. immigrant
16. emigrant
17. migrant
18. migratory birds
19. to seek revenge
20. to exact revenge
21. to avenge his death
22. environmental friendly
23. government
24. pronounce
24. pronunciation
25. He ducked and managed to dodge the blow.
26. elementary=rudimentary=basic=foundation
27. a gaggle of geese
28. a swarm of bees
29. a troop of monkeys
30. a troupe of performers
31. stench=odour
32. fragrance of the flowers
33. aroma of the coffee
34. pioneer
35. trial and error
36. achievement
37. initiate=start
38. random
39. a congregation of worshippers
40. quantities
42. qualities
43. He coined the sausage on a bun hot dog.
44. access
45. accessible
46. excess
47. excessive
48. oblivious to=unaware of
49. prominent
50. seize the opportunity=grab the chance
51. courageous=brave=bold=plucky
52. twentieth century
53. disappointed
54. disappeared
55. conscious
56. conspicuous=obvious=apparent
57. queasy
58. complacent=over-confident
59. veterinarian
60. sophisticated=complicated

Thesaurus

1. callous
-(1)ins________(11)
-(2)cr___(5)

2. perplexed
-(1)ba_____(7)
-(2)pu_____(7)

3. yield
-(1)pro_______(10)
-(2)ga__(4)

4. potent
-(1)pow_____(8)
-(2)inf________(11)

5.infamous
-no_______(9)

6. abhor
-(1)de____(6)
-(2)ha__(4)

7. expedite
-(1)ha____(6)
-(2)qu_____(7)

8. entice
-(1)at_____(7)
-(2)te___(5)

9. disgruntled
-(1)an___(5)
-(2)dis_________(12)

10. plucky
-(1)cou_______(10)
-(2)br___(5)

11. amicable
-fr______(8)

12. convict
-(1)pr______(8)
-(2)ja______(8)

13. pompous
-(1)ha_____(7)
-(2)ar______(8)
-(3)pr___(5)

14. appease
-(1)pl_____(7)
-(2)pa____(6)

15. vital
-(1)im_______(9)
-(2)es_______(9)
-(3)ne_______(9)

16. concoct
-(1)cr____(6)
-(2)in____(6)

17. dwindle
-(1)di______(8)
-(2)de______(8)
-(3)re____(6)

18. authentic
-(1)or______(8)
-(2)ge_____(7)

19. a morsel
-(1)a mo______(8)
-(2)a li____(6)

20. lackadaisical
-(1)not ea___(5)
-(2)not en__________(12)
-(3)unin________(12)

P5/6 - Spelling List

1. hollered
2. clenched his fist
3. stagger backwards
4. impact
5. saw his face morph into a furious glare
6. undaunted
7. retaliating
8. dissatisfied
9. reflexively
10. shoving me aside
11. without hesitation
12. pleaded
13. he lunged at me
14. flushed with anger
15. retorted
16. conviction
17. yanked
18. incensed
19. on impulse
20. disgruntled
21. chugging of the motor
22. bait
23. compartment
24. embankment
25. anchor
26. pleasantries
27. contraband cigarettes
28. wads of notes
29. coastguard vessel
30. camouflaged
31. resonated
32. foliage
33. my legs quivered
34. stunned
35. growled
36. baring its teeth
37. rustling of leaves
38. drizzle
39. squeals and screeches
40. on the prowl again
41. perpetrator
42. squabble
43. oblivious
44. argument
45. demanded for compensation
46. incredulously
47. glaring fiercely
48. persuaded
49. embarrassment
50. grudgingly
51. tingling sensation
52. simultaneously
53. malfunctioned
54. tumultuous trip
55. suspicions were aroused
56. a harrowing experience
57. permanent damage
58. monsoon drain
59. wistfully
60. the area was deserted
61. rain pelted down
62. barbecued food
63. gasped in amazement
64. fluorescent lights
65. thunderous authoritative voice
66. intricate
67. porridge
68. buoyant atmosphere
69. fidgeted
70. his body tingled with excitement
71. declined
72. flabbergasted
73. trudged
74. access card
75. whoops of excitement
76. impromptu party
77. monologue
78. perky
79. enclave
80. resume

P6 - More Algebra

1. Find the value of the following when a=5, b=7 and c=2.
(a)3a-5bc
(b)4a x 5b
(c)6b-9c
(d)42c-3b+5a
(e)13bc-14ac
(f)89c-4bc
(g)24bc divided by 5a
(h) 134c+2c -7ab

2. Solve the following.
(a) p x pq
(b)15y+34y-34a
(c)2m+2n-3m+5n
(d)7r-3t+t-7r+2t-6r
(e)cdf divided by fdc
(f)ACB+ xyz
(g) bef+feb-4bfe
(h) 2a+7d-9a-7a+15d

P6 - Algebra

1. Simplify each of the following.
(a) 5a+3a-6a
(b) 3a-(5a-4a)
(c) 3a+4b-a-b
(d) 12a+5b-7a-14b-9a
(e) 5x+7y+3z-2x-4y+z
(f) 2p-5q+7r-4p+2q-3r
(g) 12xy-13xz+5yz-4xz
(h) 7abc-4bca+6cba-cba
(i) 3a-4a+5a-7a+4
(j) 5ab-1.5ab+0.75bc+0.25cb

2. Evaluate each of the following.
(a)3a-5a+4a
(b)12a+5b-7a-14b-9a
(c)12p-25q+7r-4p+12q-3r
(d)7abc-41bca+16cba-3cba
(e)a+b+c+2b-c+3c+a
(f) 2ab+3bc+5ac-5ba+2cb+5ab

P5 Problem Sums- to be handed in on 8th Jan 2010

1. Jane, Alice and Peter had a sum of money. After Jane spent ¼ of her money, Alice spent $80 of hers and Peter spent ½ of his money, they had an equal amount of money left. If they had a total of $1008 in the end, how much did each of them have at first?

2. There were 1518 boys and girls in a room. When 2/3 of the boys and 1/5 of the girls left the room, there were twice as many girls as boys remaining in the room.
(a) How many girls were there at first?
(b) How many boys were there at first?

3. Cleo wanted to buy 16 similar shirts but she was $8 short. If she had bought 7 such shirts instead, she would have $19 left.
(a) What was the cost of 2 such shirts?
(b) How much money did Cleo have?

4. Mrs Baker bought some flour. She used ¼ of it to bake 16 cherry pies and packed the rest equally into 9 bags. There were 250g more flour in 2 similar bags than what was used for a cherry pie. If all the flour was packed into 25 bags instead, how much flour would there be in each bag? (sorry, please change 16 cherry pies to 15 and 250g to 270g.)

5. Half of a number is 90 more than a fifth of the number. What is the number?

6. Tom is nine years younger than Gary who is 13 years old. How many years later will Tom be of half Gary’s age?

7. Sally and Sandy have a total age of 45. Sally is 15 years older than Sandy. What was their total age when Sandy was half as old as Sally?

8. Eugene is 15 years old. His sister is 3/5 of his age. His sister is 3/11 of their mother’s age.
(a) How much older is Eugene’s mother than Eugene?
(b) In how many years’ time will Eugene’s mother be twice his age?

9. Juliana and Patrick had some marbles. If Juliana gave Patrick 20 marbles, both of them would have an equal number of marbles. If Patrick gave Juliana 20 marbles, Juliana would have 3 times as many marbles as Patrick. Find the number of marbles that each of them had.

10. James is 8 years old. Last year, his father was four times as old as he was. In how many years’ will their combined age be 51?

11. A bag costs $24.50. the total cost of 2 bags and a wallet is $85. What is the total cost of 3 bags and 3 wallets?

12. Aaron bought 2 similar books and 3 similar rulers for $40.30. Sharon bought 3 such books and 5 such rulers for $61. What was the total cost of a book and a ruler?