اختبار الكتروني كتاب العلوم لغات نموذج 2

1
Electromagnet changes the.........
2
........... consists of a copper coil and a magnet.
3
A device used to detect the magnetic effect of the electric current.
4
The huge electric generator is used to..........
5
A huge instrument contains electromagnet and is used to lift scrap cars.
6
the bar used in the electromagnet is made up of ….
7
the electromagnet is composed of ……………..
8
…..is/are from the uses of the electromagnet
9
all the following divices have an electromagnet inside them except the ….
10
when the compass is put beside a wire carrying an electric current ………………
11
the most attraction force of the magnet exists ………
12
magnets are divided into ……. Types
13
the natural magnet is made of one of iron ores called …….
14
the similar magnetic poles ……….each other
15
all of the following materials are attached to the magnet except………
16
The white clothes appear white when white light falls on them, because ………..
17
the natural magnet is made of one of iron ores called …….
18
magnets are divided into ……. Types
19
the blachboard …….when White lights falls on it
20
when the compass is put beside a wire carrying an electric current ………………
21
All of the following are mixtures except
22
………..are examples of mixtures
23
Fruit salad is an example of …..
24
Mineral water is ……..
25
Atmospheric air is considered as ………..
26
The animal which devours another animal is called ……………………..
27
The …….ejects a black fluid in the surrounding water when attacked by an enemy.
28
All the following are living organisms of an ecosystem except the
29
Introducing rabbits into an island that is a suitable environment with much food and no enemies will lead to the environmental……..
30
Which of the following is a very large ecosystem
31
........... is attracted to the magnet.
32
The compass contains........... magnet.
33
The region(s) of the magnet at which the magnetic force increases is (are) the.......... of the magnet.
34
All the following coloured lights are primary lights except...........
35
........... discovers that "by moving a magnet in a coil, electric energy is generated".
36
All the following are examples of semi-transparent materials except..........
37
A rainbow is formed when...........
38
Light transmits in......... lines.
39
Formation of shadow when light falls on an object is due to...........
40
We can see objects due to...........
41
When white light falls on an orange translucent box , ……..
42
mixing all the primary coloured lights give……..
43
the blachboard …….when White lights falls on it
44
we wear white clothes in summer season to …….
45
When sunlight strikes a red transparent glass sheet, the sheet appears …………..
46
The substance in which solids dissolve is called …………..
47
Apple juice is ………..
48
Mud in water is an example of ………….
49
The solution is …………
50
The solute in chocolate-milk solution is (are)……….