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Concept 1
Concept 1
نسخ
تكرار
اختبار خاص بالمعلم:
Heba abdelzaher
إسمك
صفك
مدة الاختبار:
0:10:00
الوقت المتبقي:
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1
Plant take ......from air to make own food
Water
Oxygen
Carbon dioxide
2
Formation of shadow when light falls on an object is due to...........
formation of images through narrow holes.
travelling of light in straight lines.
all the previous reasons,
transmitting light through transparent materials.
3
The materials which let all light pass through are called........... materials.
opaque
semi-transparent
transparent
translucent
4
All the following are examples of semi-transparent materials except..........
foil paper.
frosted light bulbs.
frosted glass cup.
tissue paper.
5
.......... Is not a source of light as it reflects the sunlight.
The planet
The moon
The meteor
The star
6
We can see objects due to...........
light reflection.
light refraction.
splitting of light.
absorption of light.
7
Mixing the seven light spectrum colours gives the........... Light
blue
black
white
green
8
The second spectrum colour is..........
orange.
green.
violet.
red.
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...........
10
20
30
25
10
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 doesn't pass through any medium.
sunlight passes through glass.
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