Light and Sight - grade 4

اختبار خاص بالمعلم: Heba Mostafa Mahmoud
1
Which of the following organs are working together for seeing different objects ?.........
2
The pupils of human eyes open......... that of nocturnal animals.
3
Both light energy and sound energy..........
4
Opaque material............
5
As the eye lens can redirect the entered light rays, so this lens must be............
6
Animals that have a strong vision to hunt at night, include...........
7
through which sensory receptors of the eyes send messages to the brain.
8
Polished mirror, causes falling light rays.........
9
.......... Has poor night vision, so it depends on the sound that bounces off prey's body.
10
The energy which must present to make our eyes able to see the objects around us, is.......... energy.
11
It is a rough surface, that scatter reflected light rays.
12
All the following things are considered as a light source, except.........
13
Our eyes send.......... messages to the brain, where the information is processed.
14
All of the following are transparent objects, except............
15
............ energy affects the sensory receptors in eyes of living organisms causing vision.
16
Nocturnal animals depend on all the following senses to find out their preys a night, excepte..........
17
You cannot see through all the following objects, except..........
18
To know what you are seeing and recogonize it, the.......... must receive sensory impulses from eyes.
19
Opaque objects and transparent objects are characterized by...........
20
If you see someone walking around in a dark place without hitting anything around him, so this person may............
21
In the nocturnal animals, the tapetum lucidum is a life-saving adaptation because it helps them to........... at night.
22
Painted surface........... the incoming light rays.
23
It is a structural adaptation, that gives fishing cat an excellent night vision.
24
It is the opening through which the light enters the eye.
25
The structural adaptation that helps the fishing cat to catch a prey at night, is that its ability..........
26
......... Has extraordinary sight at night and bowl-shaped face.
27
through which the light rays are reflected, so eyes of nocturnal animals are glowing at night.
28
It is a smooth shiny surface, that reflects most of falling light
29
It is a transparent matter, that allows light to pass through
30
Humans have......... eyes than nocturnal animals.

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