4 th primary. 2 nd term 1 Science
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1 2 nd term 1 Science
2 A-Choose: Model Answer (work sheet) pharynx 3-stomach 4-seven meters 5-stomach. 6-digestive system. 7-lung 8-respiration 9-nose 10-hair and mucus. 11-organs 12-cell 13-chloroplast 14-plasma membrane 15-cancelled. 16-oxygen gas 17-sunlight 18-green algae 19-green plants 20-consumers 21-cow 22-consumers 23-decomposers 24-energy 25- energy 26- cancelled. 27 -electricity. 28- battery 29- cancelled. B-Complete: 1-digestion. 2-digestive canal and digestive canal supplementaries. 3-pharynx-oesphagues stomach. 4-liver pancreas and salivary glands mouth. 7-pharynx 8-oil&fats. 9-small intestine. 10-energy. 11-chest. 12-hair,blood capillaries and mucus. 13-Epiglottis 14-inhalation-exhalation. 15-alvoli. 16-Carbon dioxide. 17-systems-cells. 18-Plant cell. 19-Animal cell. 20-nucleus cytoplasm and plasma membrane. 21-sap vacuole-cell wall and chloroplasts. 22- cancelled. 23-food and oxygen. 24-Sunlight. 25-Green plant and green algae. 26-Decomposers. 27 -heat -light. 28-heat. 29- vibration. 30- cancelled. 31- cancelled. 32- cancelled. 33- cancelled. 34-heat-light. 35-photosynthesis. 36-dynamic. 2 nd term 2 Science
3 C- write the scientific term: 1-Digestive system. 2-Digestion process. 3-Incisors and canines. 4-Saliva. 5-Pharynx. 6-Stomach. 7-Bile juice. 8-Absorption. 9-Respiration. 10-Carbon dioxide. 11-Inhalation. 12-Exhalation. 13-Diaphragm. 14-Organ 15-System. 16-Cell. 17-Plant cell. 18- cancelled. 19-Photosynthesis. 20-Carbon dioxide gas. 21- Iodine 22-Green plants(producers) 23-Green plants(producers). 24-Consumers. 25-energy. 29-Sound energy. 30-Light energy. 31-heat energy. 32-Static electricity. 33-Electric circuit. D-Give reason for: 1-Because saliva changes starch into sugar. 2-Because they grind food. 3-To keep your digestive system healthy. 4-Because nose has hair and mucus to filter the air from dust and microbes, and blood capillaries to warm the air. 5-To allow the gas exchange. 6-To keep your respiratory system healthy. 7-Because it doesn't have cell wall. 8-Because it has cell wall. 9-Because they make their own food by the photosynthesis process. 10-Because sound is produced from the vibration of objects. (or because kinetic energy changes into sound energy) 11- cancelled. 12-Because it is the source of the electric current. 2 nd term 3 Science
4 E-Put ( ) or ( ): cancelled F-What happens : 1-No digestion of starch will happen. 2-Air will not be warmed. 3-Leaves will be yellow and weak due to absence of photosynthesis process. 4-We can t open and close the electric circuit. 2 nd term 4 Science
5 Model Answer Exam 1 Answer the following questions : Question 1 (A)Correct the underlined words : 1.Small intestine. 2- chloroplasts and cell wall. (B)a-This figure represent digestive system. b-mention the labels: 1.Esophagus. 2.stomach. 3.liver. 4.large intestine. 5.small intestine. C. Stomach digests protein by gastric juice. Question 2 (A) Complete the following statements : 1.mouth-anus. 2-consumers. Question 3 (A) Give reason for each of the following: 1. Because it changes the food from complex form into simpler form to be easily used by the body. 2. Because it contains carbon dioxide. 3. cancelled. (B) 1. Producers: Green algae -Wheat plant. Consumers :Cows - Lions - Human - Chicken Snake. Decomposers: Bread mold fungus. 2.Question is cancelled. Question 4 (A) Write the scientific term : 1. liver. 2.alveoli 3.system 4.sound. (B) Give one function for each of the following: 1. It changes starch into sugar. 2 nd term 5 Science
6 2. To warm the air. 3. it is a source of electricity. Model (2) Answer the following questions Question1 1-g 2-e 3-f 4-h 5-c 6-b (B) Write down the name of the produced energy from 1. Heat energy. 2. Sound energy. 3. Light energy. Question 2 (A)Complete the following statements: 1.tissues cells. 2-digestion absorption. 3-Diaphragm. 4-kinetic-electric. (B)Answer the following questions : 1. Sunlight-water-chloroplasts and carbon dioxide gas. Question 3 (A)1. saliva 2.larynx. 3.Algae. 4. Sound. (B) Give reason for each of the following: 1. Because they consist of tissues. 2- Cancelled. Question 4 (A) What happens when? 1. Some food will enter the trachea during swallowing. 2. The lamp wouldn t work. (C) Answer the following questions : 1.Respiratory system. 1-Trachea 2-Bronchi 3-Lung 4- Alveoli 5- diaphragm 2 nd term 6 Science
7 Answer the following questions : Question Model (3) (A)Complete the following statements : 1.systems-organs m-small intestine. 3. cell wall-plasma membrane. 4. sound-light. (B)Correct the underlined words : 1. respiratory system and digestive system. 2. chloroplast. 3. consumers 4.chemical energy. Question 2 (A)Write the scientific term : 1.cancelled 2.epiglottis. 3.static electricity. 4.electric energy. (B)1. Digestive system: Stomach Esophagus-Liver- Mouth. Respiratory system: Lungs - Trachea - Nose. Question 3 (A) 1.molars 2.Canines 3. incisors teeth. 1-Complete: a-bile-sugar. b-inhalation-exhalation. Model (4) 2 nd term 7 Science
8 2-A- Rewrite the following statements after correcting the underlined words: 1- The nucleus of each of plant cell and animal cell is surrounded by a jelly like fluid is called plasma membrane. (Cytoplasm) 2-Gastric juice breaks down fats.( Bile) 3-Lungs exist in the abdominal cavity of human body.( Chest cavity). 2-B- Write one function for each of the following: 1-Gases exchange occurs in alveoli. 2-Closes trachea during swallowing of food. 3-It allows the food to pass from pharynx to stomach. 3-A- Choose the correct answer from between brackets: 1-organs. 2- alveoli. 3-B- Give reasons for each of the following: 1- Because epiglottis closes trachea during swallowing. 2- Because they make their own food by photosynthesis process. 4-A- Write the scientific term for each of the following statements: 1-Absorpation. 5-What happens when: 1-Sound is produced. 2-There is no oxygen and life on Earth. 3- It harms the digestive system. Exam 5 1-Complete: a-liver and pancreas. b-carbon dioxide energy. c-oxygen carbon dioxide. 2-a- Rewrite the following statements after correcting the underlined words: 1-Gastric juice changes starch into sugar. (Saliva) 2-Exhaled air contains a big amount of nitrogen gas.( Carbon dioxide) 2-b- Compare between the plant cell and animal cell related to; Plant cell Chloroplasts Cell wall Animal cell 2 nd term 8 Science
9 3-Give reasons for each of the following: 1-Because stomach secretes gastric juice. 4-Choose from column (B) that suits column (A) A B 1- Larynx a- has cilia to filter the inhaled air. 2- Trachea b- connects between the nose and larynx 3-Alveoli c- at its upper parts,there is the epiglottis 4-pharynx d- a process in which absorption of food takes place 5-small intestine e- exists inside the lungs where gas exchange takes place. 1-c 2-a 3-e 4-b 5-d 5-Look at the opposite figure,then answer the following : 1- Animal cell. 2-1-cytoplasm, 2-nucleus 3-small vacuole 4-plasma membrane Exam 6 1-Complete: 1) Mouth-esophagus. 2) Sunlight. 3) cancelled. 2- Mention the function of : a. Gas exchange is occurred in it. b. It digests protein by gastric juice. c. It produces food and oxygen. 3-Correct the underline words in the following statements: 1. Food burns in the body cells in the presence of carbon dioxide.(oxygen) 2. The digestion of starch starts in the stomach.(mouth) 3. The tissue consists of a group of organs.(cells) 4. Most of equipment at home work by coal.(electricity) 4-A-Current Electricity (DYNAMIC) It is the flow of electric charges through connecting wires for a long distance Static Electricity : It is the electric charges that remain on an object. It doesn't flow in wire. 2 nd term 9 Science
10 4-B- complete the following figure. -respiratory system. -1-trachea 2-bronchai 3-lung 4-alveoli. 5-Give reason for: a-because they make their own food by photosynthesis process. b-because nose has Hairs and mucus to filter the inhaled air from dust and microbes and Blood capillaries to warm the inhaled air. c-to keep our respiratory system healthy. Exam 7 1-Complete: 1-pharnyx esophagus-stomach. 2-gastric. 3-small intestine. 4-static current (dynamic). 2-Choose the correct answer: 1- absorption process. 2- nose. 3- Larynx. 4- Epiglottis. 5-Alveoli. 3-Write the scientific term: 1-Cell. 2-cancelled. 3-Photosynthesis. 4-Sun. 4-This figure represent digestive system. Mention the labels: 1.esophagus. 2.stomach. 3.liver. 4.large intestine. 5.small intestine. 5-Put ( )or ( x ) 2 nd term 10 Science
11 cancelled cancelled 1-Complete: 1) canines-molars. 2) pharynx. 3) abdominal 7. 4) cell wall-chloroplast. 5) mouth-stomach. 2-A-Write the scientific term: Exam 8 1-Digestion process. 2-Liver. 3-Inhalation. 4-Saliva. 2-B-Choose: 1-fats. 2-cancelled. 3-completely digested. 3-A-Choose: 1-respiratory. 2-plasma membrane. 3-all of them. 4-cytoplasm. 3-B-Correct: 1- In the rectum the starch is absorbed.(water) 2- Exhaled air contains nitrogen gas water vapour.( carbon dioxide) 4-A-Give reason for: 1-To allow gas exchange. 2-Because exhaled air contains carbon dioxide. 3-Because they don t have cell wall. B- 1-Cytoplasm. 2-plasma membrane. 3-nucleus. -animal. 2 nd term 11 Science
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