Model Exam. 6 th Primary. 2 nd term. Name:. Class:..

Transcription

1 Model Exam 6 th Primary 2 nd term Name:. Class:.. 1

2 Model (1) Answer the following questions : 1- [A] Complete the following sentences : 1) The fluorescent lamps contain...gas and a little of... 2) One of the dangers of the electricity which is causing the damage of the tissues of the body is called... 3) The sweet holder is from the.. class lever. 4) The electric lamps in houses are not connected in... [B] Mention the name of scientist who : 1) Invented the light bulb? (...) 2) Was the first one made an astronomical telescope in 1609?(...) 2- [A] Choose the correct answer: 1) The electric lamp converts electric energy into...energy. a. kinetic b. light c. sound 2) The biggest and the oldest source of light is... a. candle. b. glowing lamp. c. the sun. 3) The lunar eclipse phenomenon occurs in the.of the lunar month. a. end b. middle c. first 4) Force arm is always longer than resistance arm in the...class lever. a. first b. second c. third [B] A force of 100 Newton affected a lever, its force arm 10 cm. and its resistance is 20 Newton and resistance arm 50 cm. 1) Is this lever balanced or not. 2) Why? 3- [A] Write the scientific term for each of the following sentences : 1) Materials that allow the flow of electricity through them. (...) 2) The closed route through which electric current passes. (...) 2

3 3) Phenomenon occurs when a part of the moon enters the shadow area of the earth. (...) 4) A rigid bar that rotates around a fixed point called fulcrum, and is affected by force and resistance. (...) [B] Mention one function for each of the following : 1) The base of the light bulb. 4- [A] Put ( ) in front of the correct statements and ( ) in front of the wrong statements in each of the following: 1) The solar eclipse is a phenomenon that does not last more than seven hours. ( ) 2) Third class levers do not conserve the effort. ( ) 3) The filament of the light bulb is made of aluminum. ( ) [B] What happen in each case of the following: 1) Putting off fires that resulting from electricity with water.. 2) Observation of the solar eclipse directly without using special glasses.. 3

4 Model (2) Answer the following questions : 1- [A] Complete the following sentences : 1) The type of lever in which the force arm equals the resistance arm is... 2) The fluorescent lamp contains the inert...gas. 3) When the moon comes in an orbit higher from earth,... solar eclipse is formed. 4) The sun glow in the solar eclipse is... [B] What would happen if...? 1) Putting of the electric fires with water. 2) Someone looks to the sun directly with the naked eye for a long time. 2- [A] Choose the correct answer : 1) All the following are possible to be functions of levers except... a. increasing force. b. decreasing speed. c. increasing distance. d. avoid dangers. 2) Lunar eclipse occurs when the earth is on straight line with the moon and the sun, and the... a. earth is between the moon and the sun. b. moon is between the earth and the sun. c. sun is between the earth and the moon. d. stars are between the earth and the moon. [B] A third class lever has force arm of length 5 cm, and the length of resistance arm is 15 cm. if the resistance is 300 Newton. Calculate the affecting force [A] Put ( ) in front of the correct statements and ( ) in front of the wrong statements: 1) The duration of solar eclipse doesn't exceed seven minutes and few seconds. ( ) 2) If the resistance arm is longer than the force arm, the lever saves effort. ( ) 3) The spiral base of the light bulb glows due to passing the electric current through it. ( ) 4) The moon revolves around the earth in an oval orbit. ( ) 4

5 [B] Complete the following tables : 1. Point of First class lever comparison Mid point Second class lever Third class lever 2. Points of comparison Light intensity of the lamps Removing one of the lamps from the connection Connecting in series Connecting in parallel 4- [A] Write the scientific term for each of the following : 1) It occurs when a part of the moon enters the shadow of the earth. (...) 2) The fixed point of a rigid bar. ( ) 3) A force that is exerted by a person to equilibrate the resistance force. (.) 4) The most popular type of lever in our daily life. ( ) 5) The type of lever where the mid-point is the effort force.( ) [B] The drawing represents : (1)... (2)... (3)... (4)... 5

6 Answer the following questions : Model (3) 1- [A] Complete the following sentences : 1) The type of levers that always conserves effort is...while the type of levers that always doesn't conserve effort is... 2) Lunar eclipse phenomenon occurs when...is located between... and... 3)...is an example of the first class levers. [B] Give reasons for the following : 1) Avoiding the usage of water in putting off fires resulted from electricity [A] Choose the correct answer: 1) From the examples of bad electric conductors substances is... a. iron. b. plastic. c. copper. 2) The 1 st class lever differs from the 2 nd class lever in... a. the absence of the acted force. b. the presence of fixed point to rest on. c. the position of the fulcrum 3) Which of the following gases is found in the florescent lamp but not in the electric bulb... a. neon. b. argon. c. mercury vapour. [B] What is meant by: 1) Partial solar eclipse :... 2) The lever: [A] Write the scientific term for the following: 1) A phenomenon occurs when a part of the moon enters the shadow area of the earth. [ ] 2) A way in which the light bulbs is connected one after one and the light intensity of the bulbs decreases with the increase in their number. [ ] 6

7 [B] The exerted force of a first class lever equal 250 Newton and the length of its arm is 10 cm. and it is affected by a resistance of 100 Newton. Find the value of the resistance arm length [C] What happens if: 1) There is air inside the light bulb... 2) Someone looks to the sun directly with the naked eye for a long time [A] Correct the underlined part : 1) There are two points of connection from inside on both tips of the lamp. (...) 2) The simple electric circuit consists of battery, lamp and an insulator to connect the battery with lamp. (...) 3) Some levers allow the increase in the speed of objects as in the manual broom. (...) [B] The figure represents the solar eclipse phenomenon write the labels from 1-4 7

8 Model (4) Answer the following questions : 1- Complete the following sentences : 1) The scissors are an example of the...levers. 2) The type of the levers where the arm of the force and the arm of resistance are equal is... 3) In case of connecting the lamps in...the lighting of the lamps decreases with the increase in their number. 4)...solar eclipse occurs when the moon is located in a higher orbit than the Earth. 5) The electric shock occurs as a result of passing...through the human body. 6) The filament of the light bulb is made of [A] Write the scientific term for each of the following : 1) A tool converts the electric energy to light energy. (...) 2) One of the dangers of the electricity causing the damage of the tissues of the body. (...) [B] Give reason for each of the following: 1) We should not look directly at the sun with the naked eye. 2) The electric wires are made of copper. 3- [A] The force affecting a second class lever equals 200 Newton and the length of its arm is 50 cm, and has a resistance with value 1000 Newton. Calculate the value of the arm of the resistance. [B] Compare between each of the following in a table : 1) Second class levers and third class levers according to... a. The arm of force and the arm of resistance. b. Saving effort. 2) Series connection and parallel connection of the electric lamps according to... a. The light intensity of the electric lamps with the increase of their number. b. The route of the electric current. 8

9 3) The conducting materials of electricity and the non-conducting materials of electricity according to... a. Definition. b. One example. 4- [A] What happens if: 1) There is air inside the light bulb.... 2) You insert a metallic bar in an electric socket.... 3) The earth comes between the sun and the moon and they are all in one straight line.... 4) Burning an electric bulb in an electric circuit contains many electric bulbs connected in series.... [B] Choose the correct answer from a, b or c: 1) All the following are functions of levers except... a. increasing force. b. increasing speed. c. increasing size. 2) All the following are the types of lunar eclipse except... a. annular eclipse. b. total eclipse. c. partial eclipse. 3) Which of the following is found in the fluorescent lamps and is not found in the electric lamps... a. neon gas. b. argon gas. c. mercury vapour. 9

10 Model (5) Answer the following questions: 1- [A] Write the scientific term for each of the following : 1) The fixed point of a rigid bar. (...) 2) One of the dangerous of the electricity occurs as a result of the passage of electric current to the human body. (...) [B] Give reasons: 1) The lunar eclipse occurs in the middle of the lunar month. 2- Complete the following statements : 1) The fish hook is a.. class lever. 2) arm of resistance.. arm of resistance =... 3) There are.types of solar eclipses, which are., and.. 4) The. is formed when a dark object blocks a part of the incoming light. 3- [A] Correct the underlined in the following sentences : 1) The partial solar eclipse occurs when the moon comes in an orbit higher to earth. (.) 2) Wood is considered a good conductor of electricity. (.) 3) The nutcracker is a first class lever. (.) 4) The plant converts electric energy to light energy. (. ) [B] What is meant by: 1) lever.. 2) Insulators of electricity Complete the following table: Points of comparison Series connection Parallel connection 1- Light intensity of the electric lamp. 2- Damage or turning off any of the lamps. 10