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1. سورة الإسراء الآية (85) صدق الله العظيم وَمَا أُوتِيتُمْ مِنَ الْعِلْمِ إِلَّا قَلِيلاً

2. Teacher of science Mrs: Noha Mohamed By Science/4th Primary Cairo International Schools

4. Science/4th Primary* Science/4th Primary* Science/4th Primary* Science/4th Primary Science/4th Primary Science/4th Primary Science/4th Primary Science/4th Primary Science/4th Primary

5. Matter : It is every thing has mass & volume. Mass : It is the amont of matter . Volume : It is the space that is occupied by the object. Lesson (1) Unit One Measuring tools

6. 1. Mass : * The measuring tools a. Common balance [Two. Pan Balance]: It is used to weight some things Such as sugar & cheese b.Sensitive balance : it is used to weight The small masses * The measuring units a. The gram ( gm ) : it is suitable for measuring small masses. b. The kilogram( Kg ): is suitable for measuring large masses. 1 Kilogram = 1000 grams

7. 1. Volume : * The measuring tools a. Graduated cylinder It is used to measure the volume of irregular solids & liquds. b. A ruler It is used to measure the dimensions of a regular solid body. * The measuring units: a. The liter or cubic centimeter [cm3] For measure the volumes of liquids b. The cubic meter [m3] For measure the volumes of solids

8. Problem 1 : Find the volume of a brick, knowing that its length = 7 cm, its width= 5cm & its height= lcm. Answer : The volume of the brick = length X width X height 7 cm X 5 cm X 1 cm = 35 cm3

9. Problem 2 : A graduated cylinder contains 100 cm3 of water when an irregular object was put, the level of water became 150 cm3. Find the volume of the object Answer : The volume of the object= The volume of water & the objective V2 –The volume of water V1 150 cm3 – 100 cm3 = 50 cm3 .

11. 1. Complete the following : 1. Matter is characterized by having ………….. & …………… 2. We use …………………. To estimate the mass of chemicals and gold. 3.The types of balances are…………………. & ……………….. 4.Graduated ruler is used for measuring ……………….. 5.Meter is the unit for measuring …………………… 6.Common balance is used to measure ……………………

12. 7. Three meters: ………………………. Centimeters 8. The volume of the book can be calculated by multiplying…………X…………………… X…………………… 9. ……………………………… is used to measure the volume of juices . 10. Sensitive balance is used for measure…………………

13. 2. Write the scientific term : 1. A unit used to measure the small lengthes [ ]. 2.Tools used to measure the small masses. [ ]. 3. A device used to estimate the volumes of liquids or irregular solid body [ ]. 4.It is any thing has a volume & mass [ ]. 5. It is the space that is occupied by the object [ ].

14. 3. Give reasons for : 1. The car is a matter ………………………………………… .. 2.The table has a volume ………………………………………… 3. The book has mass and volume …………………………………………………

15. - Matter can change from one state to another by heating or by cooling:- Lesson (2) Unit (1) Matter states & its changes Melting It is the change of matter state from solid to liquid by heating. heating Ex: Ice -> water

16. It is the change of matter of matter from to liquid state to gas state by heating. Evaporation heating Ex: water -> water vapour. FreeZing It is the change of matter of matter from to liquid state to solid state by cooling.

17. It is the change of matter of matter from to gas state to liquid state by cooling Condensation cooling Ex: wate vapour -> water Answer the following questions 1) Complete the following:- a) Matter can be changed from one state to anther by ----------- or ---------------------

18. b) Water vapour condenses when it touches a ------------------ surface. c) Water freezes by ------------- & evaporates by --------------------- . 2) Give reasons for :- 1) The glass bottle which puts on the freezer shouldn’t full of water. ----------------------------------------------------- -------------------------------------------------------

19. 2) Appearance of some water droplets on the plant leaves & cars in the early morning. ---------------------------------------------------------------------------------------------------------------------------------------------------------- 3) Water vapour is gas state. ----------------------------------------------------------------------------------------------------------------------------------------------------------

20. Sheet (2) Unit (1) Matter states & its changes Matter has three states which are :- 1) Solid state such as :- (Sugar – Salt- Copper _ wood). 2) Liquid state such as :- (Water – Oil – Milk – Benzene). 3) Gaseous state such as :-(Water vapour – Air).

22. 3) Gaseous state :- a) Gaseous doesn’t have definite shape or volume. b) It takes the shapes & the volume of their containers. c) Its molecules are very far from each other than that of liquids.

23. Comparison between the three states of matter: Water vapour carbon dioxide Oil - water Stone - ice Examples Indefinite Indefinite Definite Shape Indefinite Definite Definite Volume Aspect Gases Liquids Solids State

24. Answer this question:- 1) Complete : a) State of matter are …………….. ,…………………. and………………….. b) Apiece of stone has a ………………….. shape and volume because it is a ………………… matter. C) Liquids have ………..……………..……… volume and don’t have definite…………………. d) Air is a …………..……..………… matter while …………………….. is a solid matter. e) The molecules of solids are ……………… to each other than the molecules of …………………………..

25. Write the scientific term:- a) Solid, liquid and gaseous states. ( ) b) A substance that take the shape &the volume of the container. ( ) c) A states of matter that charecterized by having definite shape and definite volume ( ) d) The matter has no definite shapes. ( ) e) A matter that its molecules are faraway from each other. ( )

26. Give reasons:- 1) Salt is a solid matter while oil is a liquid matter. ………………………………………………………………………………………………… 2) Milk takes the shape of its container …………………………………………………………………………………………………………………………………………… 3) Air has definite shapes or volume. ………………………………………………………………………………………………………………………………………………

27. There are different kinds of bodies in space Comparison between star, Planet & Moon Lesson (1) Unit 2 Stars & Planets G.R. * the big stars appear smaller to us because they are very faraway from us. - It is a dark body - It reflect sunlight falling on it - It rotates in the space around the planet Ex: The Moon - It is a dark body - It doesn't emit heat or light . - It rotates in space around the sun Ex: The Earth - It is a shiny body -It emits heat & light - It rotates in the space Ex: The sun Moon Planet Star

30. * There are eight planets revolve around the sun in fixed orbits. * They are dark bodies. * They don't emit heat or light. Note : Planets are arranged according to their distances from the sun. 1. Mercury 2. Venus 3. Earth 4. Mars 5. Jupiter 6. Saturn 7. Uranus 8. Neptune 2. The planets:

32. 2. Write the Scientific term : * The sun & planets that revolve around it [ ] * Dark bodies do not emit light or heat [ ] * The coldest planet in the solar system [ ] * A celestial body emits heat and light [ ] * The star of the solar system [ ]

33. 3. Give reason for each : a. The sun is a star, while the earth is a planet ……………………………………………… b. Although he moon is a dark body, we see it shiny ……………………………………………… c. The sun seems bigger to us than the other stars ……………………………………………

35. G.R . Sequence of day & night * Because the earth completes one round around its axis in 24 hours. G.R . Sequence of the fourth seasons * Because the earth complete one round around the sun in 365 days. G.R . Difference in length of day & night * Because the earth's axis is inclined

37. Questions on Lesson 1. Complete the following : 1. The earth rotates around ……… & ……. 2. Axis of the earth is ……………………. 3. Day & night are nearly equal only during …………… .. & ………………… seasons. 4.Earth rotates around sun once every……………, while it rotates around its axis once every…………………. 5. In the …………………. Season, the day is longer than the night.

44. {Seconded: weather} - It is the expected conditions of the atmosphere at a certain area during as - The weather forecast in clouds weather factors which are 1-Temperature. 2- Atmospheric pressure. 3- Winds. 4- Clouds & rain.

51. 1) Any thing has mass & volume (-----------------) 2) It’s a tool used to measure the mass of objects ( -----------------) 3) The space occupied by a matter. (---------------- ) 4) A tool used to estimate the volume of liquids. (-----------------) 5) It is the unit of measuring long lengths. (-----------------) Revision on unit (1) Question One: - Write the scientific term:

52. 6) Is the amount of matter in an object . (----- ----------- ) 7) Changing the matter from solid state to liquid state by heating. (-----------------) 8) It is the unit of measuring large masses. (------------------) 9) A state of matter take the shape of the container but its volume don’t change. (---------------) 10) Changing the matter from gas to liquid by cooling. (-----------------) 11) A group of element have luster &good conductor of heat & electricity. (-----------------)

53. 12) The structural unit of matter that can’t divided into two substances. (-----------------) 13) Change in the appearance of matter without change in structure. (-----------------) 14) It is a tool used in extinguishing fires. (-----------------) 15) An element used in making electric wires & statues (-----------------)

54. Question two: Correct the under line word: 1) Melting is the change of matter from liquid state to solid by cooling. (------------------) 2) When iron is left in wet air it forms brittle layer of sodium oxide. (---------------) 3) Oxygen gas doesn’t burn & doesn’t help burning. (---------------) 4) Solid state has no definite shape or volume. (---------------) 5) Burning of sugar is from physical change. (----------------)

55. 6) We use cooper in making bridges. (-------------- ) 7) All meals are gas except sulphur is liquid . (--------------) 8) Grinding a cub of sugar is a chemical change . (------------- ) 9) Oil is gas state while oxygen is solid state. (---------------- ) (-----------------) 10) Matter has five state. (------------- )

56. 11) Matter is the space occupied by a matter. (------------- ) 12) Molecules of solids are far away from each other. (------------- ) 13) Using the graduated tape in measuring small masses. (------------- ) 14) Sulphur is metal & it has low melting point. (------------- )

57. Question Three complete the following sentences: 1) Element divided in to ---------------------- & ---------------------- . 2) Burning of sugar is a ------------ change because it changing in the ---------- 3) We use -------------- & -------------- to put out fires. 4) Changing water in to ice considered ----------------- process. 5) -------------------is used to estimate volume of irregular body.

58. 6) Iron rust when it exposed --------------- or ----------------- & 7) An iron cylinder filed with ---------------- . 8) Cutting of paper is a ----------------- change because it change in ------------- only 9) From the factory that help in burring the fire ---------- & ------------- 10) The ---------------- & ---------- of gases change according to the container.

59. 11) To protect iron from rust we must ----------------- or ------------- 12) -------------------- is an element used in making cooking pans. 13) The length of a brick – 5cm , width = 3 cm & the high =2 cm its volume equal ---------- cm3 14) Evaporation change the matter from ------------- to ------------------- by ------------ . 15) --------------- is liquid metal while ----------------- is a liquid non metal.

60. 1) Condensation is change matter from solid to liquid. ( ) ------------------------------------------------------------ 2) Molecules of solid very close to each other ( ) ------------------------------------------------------------ 3) Copper is non metal. ( ) ------------------------------------------------------------ 4) The liquids take the volume & shape of the container. ( ) ------------------------------------------------------------ Question four: Put (√ ) or ( X ) then correct the wrong sentences:

61. 5) Iron rust if it left in dry air. ( ) ------------------------------------------------------------ 6) We use carbon in making dry cell. ( ) ------------------------------------------------------------ 7) All metal are solid except bromine . ( ) ------------------------------------------------------------ 8) We use carbon dioxide in extinguishing fires. ( ) ------------------------------------------------------------ 9) Small masses are estimated by common balance. ( ) ------------------------------------------------------------ 10) We can protect iron from rust by coating it by zinc ( ) ------------------------------------------------------------

62. Thank You Thank You Thank You Thank You