1- Proteins are made up of many. a. Sugars b. Fats c. Amino acids

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1 The first question: Choose the right answer: 1- Proteins are made up of many. a. Sugars b. Fats c. Amino acids 2- Feces are stored and expelled by the. a. Small intestine b. Large intestine c. Appendix 3-What is the identity of the organ pictured a. Pancreas b. liver c. stomach 4-. Store the Bile a. Stomach b. liver c. Gall bladder 5- helps cells to absorb sugar from the blood a. Mouth b. Insulin c. Liver 6- The symbol of soduim is.. a.na b.ne c.cl 7The organ pictured above has what function? A store bile b. store nutrients c. absorption 8-The energy stored in food is changed into mechanical energy by your muscles. a. Chemical b. Electrical c. Nuclear 9-. As you remove heat from a substance, the temperature.: a. decreases. b. increases. c. remains the same )1(

2 The second question: - Complete the sentence from the list: Respiration - Tongue Your chest 1- You can find your lungs in ( Your chest ). 2-( Tongue )is responsible for moving the food around the mouth. 6- this organ is responsible for ( Respiration.. ). The third question: Choose from column ( B ) what is suitable to column ( A ) : 1- production of yoghurt( J ). A-Effect of diabetes 2- very important for respiration( C.). 3-Blurred vision ( A.). 4-yeast ( E ). B- Metal. C-oxygen D-Rectum 5-The end of this picture is ( D.). 6-The source of lipase( G ). 7-Change the fats to fatty acids ( F ). E-for fermentation. F-Lipase. G-Pancreas 8-Fe is a ( B ). H- villi. 9-The food absorbed through it( H ). I-Change to glucose. 10-carbohydrates after digestion ( I..). J-By bacteria )2(

3 The fouirth question: A- Put ( ) or( ) 1- Yeast is used in bread making ( T ). 2- Bile Is alkaline and neutralizes acid which was added to the food in the stomach. ( T ). 3-The higher the temperature, the slower the particles of matter are moving. ( F ) 4-Energy cannot be destroyed, created or transformed from one form to another. ( F ) 5- Heat is a form of energy because it can do work. ( T ) Complete the following reactions in words: a. Lithium + Water Lithium hydroxide + hydrogen.. b. Copper + Hydrochloric acid no reaction c. Potassium hydroxide + sulphuric acid potassium sulphat. + water. d. Sulphuric acid + zinc oxide zinc sulphat + water e. Sodium carbonate + nitric acid sodium nitrate + water. + CO 2 Q.III-B: Name the following salts: a. LiNO 3 : (lithium nitrate..) b. MgCl 2 : (magnesium chloride..) c. CaCO 3 : (calcium carbonate) d. CuSO 4 : (copper sulphate ) Choose the correct answer: 1-. reflection refers to smooth surface [ diffuse - regular - absorb ] 2- The electric. is a device that changes electrical energy into mechanical energy. [ lamb - motor - heater ] 3- The object appears. because it reflects all the colors [ white - red - black ] )3(

4 4- The three primary colors of light are blue, green and. [ red - cyan - magenta ] 5- The. ray is the ray of light that is bent where it enters another different medium. [ refracted - straight - circle ] 6- visible spectrum is the ordered arrangement of the white light colors from red through. [ yellow - orange - violet ] 7- light travel in. Lines. [ straight - bent - circle ]. 8- You can see your self in a mirror because of.. [ reflection_ absorption_ refraction ]. 9- Your image in a plan mirror is..to you [ same size_ big size_ small size]. 10- The object appears. because it reflects the red colors [ red - cyan - white ] 2) The second question Put ( ) or ( ):- 1- Intensity of light depends on the light source ( T ). 2-Visible light travels in straight lines ( T ). 3-Dispersion of light is the separation of light into its spectrum ( T ). 4-Primary colors are four ( F ). 5-Light is a form of energy. ( T ). 6-A ray is a very narrow beam of light. ( T ). 7-The magnetic field is the strongest at the middle. ( F ). 8-The effects of thermal pollution is damage river. ( T ). )4(

5 9-Kinetic energy depends on the speed of an object. ( T ). 10The spectrum consist of five colors ( F ). 3) The third question: From the list put the suitable scientific terms. A thermometer conservation of energy - Magnetic field Visible spectrum - The secondary colors - Prism - Refractive index low of reflection Plane mirror - Angle of incidence. 1- Plane mirror.any flat smooth surface that reflects light. 2- conservation of energy Is energy can not be destroyed or created. 3- Visible spectrum is the ordered arrangement of the white light colors from red through violet. 4- A thermometer.is used for measuring temperature. 5- The secondary colors Is the color formed by a pair of primary colors. 6- Refractive index is the ratio between the real depth and apparent depth. 7- low of reflection is the angle of incidence equal the angle of reflection. 8- Angle of incidence is the angle between the incident ray and the normal. 9- Prism a device make a dispersion of light. 10- Magnetic field is the region a round a magnet where it has a magnetic effect )5(

6 4) The fourth question: Choose from column ( B ) what is suitable to column ( A ) : column ( A ) column ( B ) A- Celsius ( 4 ). 1_Refracted through a small angle. B- Zero ( 6 ). 2-Change electric energy into sound. C- Electric fan ( 7...). 3-Depends on the speed of object. D- 100 ( 8.). 4- scale for temperature. E- Kinetic energy ( 3.). 5- Refracted through a large angle. F- Lamp ( 10 ). 6-frezing point for water. G- Potential energy ( 9.). 7- Change electric energy into kinetic. H- Red ( 1 ). 8- Boiling point for water. I- Violet ( 5 ). 9- Depends on the height of object. J- Bell ( 2.). 10- Change electric energy into Light )6(

7 A) Re-arrange these substances to make suitable Equations metal - cold water-hydrogen- metallic hydroxide 2- - metal - acid - hydrogen- Salt 3- zinc - hydrochloric acid hydrogen- zinc chloride 4- Magnesium - copper sulphate- magnesium sulphat- copper 5- Aluminum oxygen- Aluminum oxide 6- - water calcium- calcium hydroxide- hydrogen 7- Clorophle - light energy - carbon dioxide - oxygen -Water- glucose 8- - sodium oxygen- sodium oxide From the list put every part to the diagram - Angle of incidence.( 1..). - Angle of reflection.( 3 ). - Incident ray. ( 5.). - Reflected ray. ( 4..). - Normal. ( 2..) )7(

8 Complete the equations: 1- Zn + HCl zncl 2 + H 2 2- KOH + HCl KCL 2 + H 2 O 3- NaCl + AgNO 3 NaNO 3 + Agcl 4- H 2 SO 4 + Na 2 CO 3 Na 2 so H 2 O + CO 2 Heat 5- fe + s FeS C) Circle the best answer between brackets: 1- KCl is a(n)....(acid - Base - Salt). 2- Waste heat energy escaping into the environment is... (Cooling Freezing - Thermal Pollution) 3- The energy stored in the sun... (Nuclear - Magnetic - Electrical) 4- E p = F g X.... (h - W - E k ) 5- The head of a match has stored.. (Kinetic - Electric - Chemical) energy. 6- NaOH is the chemical formula for a(n).... (Alkali - Acid - Salt) Complete the equations 1. Zinc + hydro chloric acid Zinc chloride + hydrogen. 2. Metal + Acid salt + hydrogen 3. Metal + Cold water metal hydroxide + water 4. Aluminum + sulphric acid Aluminum sulphate + hydrogen. 5. Aluminum + hydrochloric acid Aluminum choloride + hydrogen 6. Aluminum + oxygen Aluminum oxide. 7. Lead sulphide + Oxygen lead oxide + sulphur dioxide 8. Copper I sulphide + Oxygen + heat copper oxide + sulphur dioxide 9. Lead Oxide + Carbon lead + carbon dioxide )8(