Final revision sheet

6thprimary

1-Complete the following

1-The scissors are considered ------class lever, while the manual broom is ------class lever.

2-The filament of class bulb is made of ------

3-The seesaw is an example of the ------class lever.

4-Fluorescent lamp is filled with filled with inert ------gas and little amount of…………………...

5-The lever saves effort when its force arm is ------than the resistance is ------than the resistance.

6-The phenomenon of the lunar eclipse occurs when the Earth, moon and sun are all on straight line with the …………… in the middle

7-The total lunar eclipse occurs when the whole moon enters the ………………

8-In case of solar eclipse …………………..lies between sun and……………..

9-Lunar eclipse occurs in the……………….of the lunar month

10-The sun glowing in the solar eclipse is……………………

11-The lunar eclipse may last for more than……………………

12-The electric wires are covered with………………..

13-……………………phenomenon occurs, when the moon is located between sun and earth on straight line

14-Levers perform tasks more easily by…………………,…………….and…………….

15-………………………from the first class levers ,while sweet holder from……………….class levers

16-…………………………lever is used to increase the distance , while…………….picks up very small objects

2-Write the scientific term

1-A phenomenon occurs when the moon comes in orbit higher than the Earth (……………)

2-It occurs when a part of the moon enters the shadow area of the Earth (------)

3-Astronomical phenomenon occurs when the whole moon enters the shadow area of Earth (………………………)

4-A rigid bar rotates around fixed point called fulcrum (………………………)

5-A type of lever that always conserves effort (…………………………..)

6-A fixed point on which a rigid bar rotates around. (------)

7-A type of levers at which the force lies between the resistance and the fulcrum. (------)

8-A material that covers the inner surface of fluorescent lamp (…………………)

9-Coiled and thin wire heats up and emits light when the electric current passes through it (……………………….)

10-A type of levers that has the fulcrum between effort force and resistance force (……………………………)

3-Correct the underlined word

1-Nutcracker is from the first class levers

2-The crowbar is a second class lever

3-Second class levers don’t save effort

4-The total solar eclipse occurs in the semi-shaded area of the moon on the Earth ………………………

5-Lunar eclipse occurs at the end of the lunar month …………………

6-Partial solar eclipse occurs when the cone umbra doesn’t reach to the Earth’s surface …………………

7-Total solar eclipse occurs when the moon comes in an orbit higher than the Earth ………………………..

8-The partial solar eclipse is formed in the shadow area of the moon ………

4-Give reason for

1-We shouldn’t look directly to the sun with the naked eye

…………………………………………………………………………………………………………..

2-The occurrence of solar eclipse

………………………………………………………………………………………………………………

3-Lunar eclipse does not require precautions or special glasses to look at it

…………………………………………………………………………………………………………………..

4-Levers are very important

…………………………………………………………………………………………………………………

5-Second class levers always saves effort

………………………………………………………………………………………………………

5-What happen when

1-When a part of the moon enters the shadow area of Earth

…………………………………………………………………………………………………………………..

2-The whole moon enters the Earth’s umbra

…………………………………………………………………………………………………………………..

3-Looking directly to the sun with the naked eye for a long time

…………………………………………………………………………………………………………………

4-Effort arm is longer than resistance arm

………………………………………………………………………………………………………………

5-Effort force equals the resistance force

………………………………………………………………………………………………………………..

6 -Define

1-Annular solar eclipse

………………………………………………………………………………………………………………

2-Total lunar eclipse

……………………………………………………………………………………………………………

3-Partial solar eclipse

………………………………………………………………………………………………………..

4-Electric circuit

………………………………………………………………………………………………………

5-Umpra

……………………………………………………………………………………………………..

8-Mention the similarities between solar and lunar eclipse

1-

2-

9-Compare between solar and lunar eclipse

Solar eclipse / Lunar eclipse

10-Put (√) or (x)

1-Looking at the lunar eclipse is harmful to the eye (…………)

2-The duration of solar eclipse doesn’t exceed seven minutes and few seconds (………..)

3-The phenomenon of solar eclipse occurs when Earth, moon and sun are on one straight line (………)

4-The solar and lunar eclipse repeated regularly and can be predicted (…)

5-Second class levers doesn’t conserve effort (………..)

6-First class levers have the resistance force between fulcrum and resistance (…………)

11-Mention one function

1-Tweezers ……………………………………………………………………………………………………

2-Tungsten filament

…………………………………………………………………………………………………………………….

3-Lamp base

…………………………………………………………………………………………………………………..

4-Glass bulb

…………………………………………………………………………………………………………………..

5-Argon gas

………………………………………………………………………………………………………………..

6-Coal holder

…………………………………………………………………………………………………………….

7-Copper and lead wires

………………………………………………………………………………………………………….

8-Manual broom

………………………………………………………………………………………………………..

9-Hockey bat

…………………………………………………………………………………………………………..

10-Two points of connection

………………………………………………………………………………………………………..