Nozha Directorate of Education Nozha Language Schools Ismailia Road Branch

Transcription

1 Cairo Governorate Nozha Directorate of Education Nozha Language Schools Ismailia Road Branch Department: Science Form : 6 th Primary Unit ( 1 ) Lesson ( 1 ) : Type of levers A- Complete: 1- is a rigid bar that rotates around a fixed point called. and is affected by. and is a fixed point that the bar rotates around. 3- The effort point (E): is the point at which the affects. 4- Functions that can be performed by lever are determined according to the locations of the force,..,. and according to their Levers can be classified into types. 6- In levers of first order the.. is located between the.. and the.. 7- The levers of first type save effort when the.. is longer than the. 8- Levers of second type save effort because effort arm is always..... than resistance arm. 9- In the levers of third order, the located between the.. and the The bottle opener and wheel barrow are levers of the.. kind, while the pilers are levers of the.. kind. 11- The pincers are from the levers of.... class while the ice holder is from the levers of the.... class. 12- The nutcracker is a lever of... class, while the scissors are a lever of. class. 13- The forceps are lever of the third order in which the.... is longer than and are examples of the first class levers and are examples of second class levers and are examples of third class levers. 1

2 B- Look at the following figures, then determine the kind of lever and write the name of the parts of which arrows point. C- in the figures show: 1. what are the types of ( A ) and ( B ) levers? C- Choose:- 1- The effort lies between resistance and fulcrum in the. ( Wheel borrow pincers hammer sugar holder ) are examples of third order levers. ( Pincers scissors coal tongs pliers ). 3- Fulcrum is located between resistance and effort in the.. ( Nutcracker ice holder Scissors bottle opener ). D- Give reason for: 1- Man depends in his life on levers. 2- The seesaw is a lever of first class. 4- Levers of the third class do not save effort but we use them in our life. 2

3 E- Mention the type of lever for each of the following 1- Nutcracker.. 2- Tweezers. 3- Wheel barrow Scissors 5- Cool tongs 6- Seesaw. 7- Pliers.. 8- Forceps. F- In the opposite figure The load and the wheel barrow Weigh 50 kg. Weight What force must the man exert To move the barrow G- Put ( ) or ( ) 1- Second class levers has a force between the resistance and the fulcrum. ( ) 2- The crowbar is an example of first class levers ( ) 3

4 Unit ( 2 ) I- Complete: Electric energy 1-. is the main source of heat & light 2-. a tool that converts electric energy to light is are considered one type of light bulb. 4- The filament of the light bulb is made of 5- The electric lamp connected to the electric circuit by..,.. 6- We fill the lamp with. gas to stop combustion. II- Write the scientific term: 1- The element which the filament of the electric lamp made of (... ) 2- The most popular source of artificial light in all houses (... ) 3- The flow of electric charges through a conductor (... ) 4- The coiled wire which made of tungsten in the electric lamps(... ) 5- The part of lamp which protects the filament from burning by isolating the air (... ) 6- A part of the electric lamp which connects the lamp in the circuit (... ) 7- The lamp which has 2 filament of tungsten. (... ) III- G.R.F: 1- Man invented the electric lamp. 2- The electric lamp is filled with inert gas. 3- the base of the lamp has 2 pieces of lead 4- it s preferred to connect lamps at home in parallel 4

5 5- The connected lamp in series has one route from electric lamp. 6- Connecting lamps in series in not preferred. IV- Write the lable: ( 5 ) ( 1 ) ( 2 ) ( 3 ) ( 4 ) IIV- With drawing explain how can you connect a group of lamps in series. 5

6 Danger of electricity. I- Complete: 1-,... &. from the uses of electricity. 2- Electricity is dangerous because ,. & from the dangerous effects of electricity. 4-.., are good conductor of electricity. 5-..,,.. are bad conductor of electricity. 6- The harms of electric shock depend on. & 7- From the precautions in dealing with electricity are. a).. b).. c).. d).. e).. f).. II- Give reason for: 1- Our use of electricity increases. 2- Electricity can cause danger.. 3- We must place a piece of plastic in the socket. 4- We must not leave the wire unisolated. 5- You have an electric shock if you touch a source of electricity. 6

7 III- Write the scientific term: 1- It results when an electric current passing through the human body. 2- A closed path that the electric current passes in 3- The isolated parts that the electric current cables stretched on 4- It s caused by neglected the safety precautions that have to be followed while dealing with electricity 5- The materials that allow the electric charges to flow through them 6- the materials that don t allow the electric charges to flow through them IV- What happens it: 1- If you touch a source of electricity with your hands. 2- Deal with electricity with neglected way. 3- If the injured person from electricity can t breathe 4- If we place several connections in the same socket. 5-You put a source of heat near the furniture & curtains. 7

8 A- Complete:- Unit ( 3 ) 1- occurs when earth, moon and sun are nearly on one straight line & the moon in the middle. 2- hides the sunlight from us and a. of the moon is formed. 3- Solar eclipse does not last more than. minutes and.. Seconds. 4- There are three types of solar eclipse which are..., and. 5- Total Solar eclipse is Partial Solar eclipse is Annular Solar eclipse is.. 8- Doctors warn of. as its rays.. and can lead to within few minutes. 9- Solar eclipse affects the eye in general or the. 10-The outer solar corona keeps on emitting... to the eye like.. and are used to observe the solar eclipse. 12- The lunar eclipse occures in of lunar month. 13- Lunar eclipse occures when earth hides... or apart of it from moon at a rate of... lunar eclipses per year. 14- There are two types of lunar eclipse which are..... and 15- The lunar eclipse becomes if the moon falls in the penumbra area. 16- When the earth comes between moon and sun, lunar eclipse will be.... 8

9 E- Put ( ) or ( ) 1- Two phenomena of lunar and solar eclipse are repeated regularly and can be predicted ( ) 2- More than one type of solar eclipse can be observed. ( ) 3- When the cone shadow doesn t reach earth surface so annular solar eclipse can be observed ( ) What is meant by? 1- Partial solar eclipse.. 2- Total solar eclipse Cone umbra. 4- Penumbra. 5- Annular solar eclipse... 9

10 Unit ( 4 ) I- Complete: 1- Green plants depend on..,.. from the air.. &.. From the soil 2- Plants make their own food through a process called ,...,.., are the elements which the plants need in small amounts 4- Absorbing minerals & water from the soil occurs by.. in the root. 5- The root systems composed of. &. 6- The root hair is lined from in side with a thin layer of.. 7- The root hair is lined with layer. 8- The role of root hair in absorption of water & minerals. a).. b).. c).. d).. 9- The tissue which Transfers water & salts to the plant parts is called Osmotic properties is. 11- The vital process by which the plant gets rid of water is called II Write scientific term:- 1- The tissue that transfers water & minerals to all parts of the plant. 2- The part of the root that responsible for absorption. 3- The openings in the plant leaves to get rid of water in the form of w.v 4- The two cells which surround the stomata. 10

11 5- A force produced due to the lost of water which creates pressure. 6- The transfer of water of high concentration to the low concentration. III- G.R.F: 1- The rises of water to the top of the plant.. 2- Stomata are very important Root hair has a concentrated solution more than the soil solution The age of root hair is short ( few days ).. 5- The root hair secretes sticky substance... IV- What happens if: 1- The root hair doesn t secrete sticky substance. 2- The osmotic pressure of the root hair is less than that of the soil. 3- The plant root can t respire to produce energy. 4- Leaves don t have stomata. 5- The plant doesn t make photosynthesis. 11