Light and Sight - grade 4

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
Owls and.......... cannot move their eyes in their sockets.
8
through which sensory receptors of the eyes send messages to the brain.
9
Polished mirror, causes falling light rays.........
10
It concentrates the light rays on a single point.
11
.......... Has poor night vision, so it depends on the sound that bounces off prey's body.
12
........... Doesn't have spectacular night vision, but depends on night vision goggles.
13
The energy which must present to make our eyes able to see the objects around us, is.......... energy.
14
It is a rough surface, that scatter reflected light rays.
15
The reflected light rays from an object enter the eye through.........
16
All the following things are considered as a light source, except.........
17
The wide pupils of human eyes, letting in......... light than those of fishing cat
18
Our eyes send.......... messages to the brain, where the information is processed.
19
All of the following are transparent objects, except............
20
All of the following are correct about the function of the eye lens, except it the entered light rays...........
21
............ energy affects the sensory receptors in eyes of living organisms causing vision.
22
Nocturnal animals depend on all the following senses to find out their preys a night, excepte..........
23
All the following living organisms have tapetum lucidum, except...........
24
You cannot see through all the following objects, except..........
25
If the eye lens is made up of an opaque material, then this eye...........
26
To know what you are seeing and recogonize it, the.......... must receive sensory impulses from eyes.
27
All of the following are preys for tarsier, except...........
28
The function of tapetum lucidum, looks like the function of..........
29
Opaque objects and transparent objects are characterized by...........
30
The organism that has no eyes in the following species, is............
31
If you see someone walking around in a dark place without hitting anything around him, so this person may............
32
Both tarsier and owl,..........
33
In the nocturnal animals, the tapetum lucidum is a life-saving adaptation because it helps them to........... at night.
34
Painted surface........... the incoming light rays.
35
It is a structural adaptation, that gives fishing cat an excellent night vision.
36
It is the opening through which the light enters the eye.
37
Our eyes,..............
38
The structural adaptation that helps the fishing cat to catch a prey at night, is that its ability..........
39
Each of human, fishing cat and tarsier,..........
40
through which the light waves entre the eyes.
41
If the passed light rays from a transparent objects is fallen on an opaque object then the opaque object........ through the transparent object.
42
It is the place in which the eye can move inside as in human.
43
......... Has extraordinary sight at night and bowl-shaped face.
44
...........Its eyes cannot move in their sockets, and it has a bowl shaped face.
45
through which the light rays are reflected, so eyes of nocturnal animals are glowing at night.
46
There is a inside your eye, that redirects the entered light rays.
47
It is a smooth shiny surface, that reflects most of falling light
48
It is a transparent matter, that allows light to pass through
49
Humans have......... eyes than nocturnal animals.
50
The right path of the light rays, that is reflected from an object on our eyes causing vision is..........

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