Toggle navigation
التسجيل
تسجيل الدخول
الرئيسية
»
الاختبارات
»
الفصل الدراسي الأول
»
Unit 1 : Energy - grade 5
Unit 1 : Energy - grade 5
نسخ
تكرار
1
Light transmits in......... lines.
zigzag
curved
straight
broken
2
The green glass bottle.......... when white light falls on it.
absorbs all light colours and allows the green colour only to pass through
absorbs all light colours
reflects all light colours
reflects the green colour only
3
All the following are non-magnetic materials except............
aluminium.
copper.
plastic.
cobalt.
4
A huge instrument contains electromagnet and is used to lift scrap cars.
Electromagnetic
Ammeter
Dynamo
Winch
5
.......... Is not a source of light as it reflects the sunlight.
The planet
The star
The moon
The meteor
6
All the following coloured lights are primary lights except...........
blue.
red.
green.
yellow.
7
When a magnet is suspended freely, its north pole is directed towards......... direction.
west
east
south
north
8
........... discovers that "by moving a magnet in a coil, electric energy is generated".
Mosely
Newton
Faraday
El-Hassan Ibn El-Haitham
9
If you put an object at a distance of 20 cm. in front of the mirror, the distance between the image and the mirror equals...........
20
25
10
30
10
Which of the primary colours are mixed to produce yellow colour ?...........
Blue and cyan.
Blue and red.
Red and green .
Green and blue.
11
The North Pole.......... with the North Pole
attracted
repel
attracted and repel
No answer
12
The south Pole.......... with the North Pole
repel
No answer
attracted and repel
attracted
13
A rainbow is formed when...........
sunlight passes from air to water, then its splitting into seven colours.
sunlight passes from the drops of rain water to air, then its splitting into seven spectrum colours.
sunlight passes through glass.
sunlight doesn't pass through any medium.
14
When sunlight strikes a blue transparent glass sheet, the sheet appears...........
blue.
yellow.
red.
black.
15
The compass contains........... magnet.
horse-shoe
ring
small light magnetic needle
bar
16
It converts the mechanical (kinetic) energy into electric energy.
Winch
Dynamo
Electromagnetic
Ammeter
17
All the following are examples of semi-transparent materials except..........
frosted light bulbs.
frosted glass cup.
tissue paper.
foil paper.
18
Transparent and translucent objects have the same colour of...........
the absorbed light colour.
the refracted light colour.
the transmitted light colour.
the reflected light colour.
19
The natural magnet is one of the............ ores.
carbon
aluminium
iron
copper
20
The coil of a dynamo is made up of........ Wire
Copper
Carbon
Sulphur
Iron
21
The second spectrum colour is..........
orange.
red.
green.
violet.
22
Mixing.......... lights produces magenta light.
blue and green
red and blue
red and yellow
red and green
23
The magnet is surrounded by an area called...........
magnetic field.
magnetic poles.
no correct answer.
non-magnetic materials.
24
The............ pole of the magnet always refers to the south direction of the Earth.
east
south
north
west
25
A device used to detect the magnetic effect of the electric current.
Ammeter
Electromagnetic
Winch
Dynamo
26
The materials which let all light pass through are called........... materials.
translucent
transparent
opaque
semi-transparent
27
The flewer seems red, because it absorbs..........
the red colour only.
all light colours.
red and green colours.
all light colours and reflects the red colour only.
28
The............ pole of the magnet always refers to the north direction of the Earth.
south
west
north
east
29
The huge electric generator is used to..........
generate magnetic energy.
generate electricity used for operating factories.
No Answer.
generate heat.
30
Mixing the seven light spectrum colours gives the........... Light
black
green
white
blue
31
When you look at a red apple from a yellow glass sheet, the apple seems............
Red.
black.
Blue.
Yellow.
32
The region(s) of the magnet at which the magnetic force increases is (are) the.......... of the magnet.
two poles
two halves
No answer
midpoint
33
Electromagnet changes the.........
electric energy into mechanical energy.
Magnetic energy into electric energy.
kinetic energy into magnetic energy.
electric energy into magnetic energy.
34
A structure made of a copper wire twisted around a wrought iron bar and the wire is connected to a battery.
Electromagnetic
Winch
Dynamo
Ammeter
35
Formation of shadow when light falls on an object is due to...........
travelling of light in straight lines.
all the previous reasons,
formation of images through narrow holes.
transmitting light through transparent materials.
36
............ reflects all light colours.
Yellow opaque object
Transparent object
White opaque object
Black opaque object
37
The natural magnet is a.......... rock
red
blue
black
green
38
Dynamo changes the.........
electric energy into magnetic energy.
Kinetic energy into electric energy.
kinetic energy into magnetic energy.
electric energy into mechanical energy.
39
We can see objects due to...........
absorption of light.
light refraction.
splitting of light.
light reflection.
40
......... are coloured lights which impossible to be produced by mixing two of the other coloured lights.
Primary coloured lights
Green and magenta
Secondary coloured lights
Yellow and green
41
........... is attracted to the magnet.
Plastic
Chalk
Glass
Cobalt
42
........... consists of a copper coil and a magnet.
Horse-shoe magnet
Dynamo
Electromagnet
Magnetic needle
×
بلاغ عن خطأ
مقدم البلاغ
طالب
معلم
السؤال
تفاصيل الخطأ
إرسال
إلغاء
×
مشاركة
#
#
نسخ الرابط