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