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Light and Sight - grade 4
Light and Sight - grade 4
نسخ
تكرار
اختبار خاص بالمعلم:
Adel Nasser
إسمك
صفك
1
Which of the following organs are working together for seeing different objects ?.........
Tongue and brain.
Eyes and brain.
Nose and brain.
Ears and brain.
2
The pupils of human eyes open......... that of nocturnal animals.
narrower than
similar to
typical to
wider than
3
Both light energy and sound energy..........
cannot be seen.
the light energy can be seen, while sound energy cannot be seen.
the sound energy can be seen, while light energy cannot be seen.
can be seen.
4
Opaque material............
allows light to pass through.
absorbs some of light that fall on it only.
absorbs some of light that fall on it and bounces off the other.
bounces off some of light that fall on it only.
5
As the eye lens can redirect the entered light rays, so this lens must be............
an opaque material.
a reflecting material.
a transparent material.
a mirror-like.
6
Animals that have a strong vision to hunt at night, include...........
owl and snake.
owl and bat.
cat and snake.
owl and cat.
7
Owls and.......... cannot move their eyes in their sockets.
tarsiers
humans
fishing cats
arctic foxes
8
through which sensory receptors of the eyes send messages to the brain.
Brain
Nerves
Tapetum lucidum
Pupil
9
Polished mirror, causes falling light rays.........
to reflect at the same angle they strick the polished mirror. polished mirror.
to pass through it.
to reflect at different directions they strick the polished mirror.
to diffuse like that of rough surfaces.
10
It concentrates the light rays on a single point.
Eye pupil
Eye socket
Eye lens
Tapetum lucidum
11
.......... Has poor night vision, so it depends on the sound that bounces off prey's body.
Snake
Owl
Bat
Fishing cat
12
........... Doesn't have spectacular night vision, but depends on night vision goggles.
Tarsier
Owl
Human
Cat
13
The energy which must present to make our eyes able to see the objects around us, is.......... energy.
magnetic
electric
light
sound
14
It is a rough surface, that scatter reflected light rays.
Piece of cloth
lenses
Polished mirror
Moon
15
The reflected light rays from an object enter the eye through.........
tapetum lucidum.
blood vessels.
eye pupil.
eye socket.
16
All the following things are considered as a light source, except.........
eyes.
fire.
the Sun.
the light lamp.
17
The wide pupils of human eyes, letting in......... light than those of fishing cat
less
very large amount of
large amount of
more
18
Our eyes send.......... messages to the brain, where the information is processed.
light impulses
electrical impulses
written
hearing
19
All of the following are transparent objects, except............
paper.
glass.
water.
air.
20
All of the following are correct about the function of the eye lens, except it the entered light rays...........
concentrates
diffuses
focuses
collects
21
............ energy affects the sensory receptors in eyes of living organisms causing vision.
Electric
Light
Sound
Heat
22
Nocturnal animals depend on all the following senses to find out their preys a night, excepte..........
sight sense.
hearing sense.
smelling sense.
taste sense.
23
All the following living organisms have tapetum lucidum, except...........
horses.
snakes.
fishing cats.
dogs.
24
You cannot see through all the following objects, except..........
human body.
a glass of water.
painted surface.
polished mirror.
25
If the eye lens is made up of an opaque material, then this eye...........
cannot see any objects around it.
can see both the far and the near objects.
can see the near objects only.
can see the far objects only.
26
To know what you are seeing and recogonize it, the.......... must receive sensory impulses from eyes.
spinal cord
brain
sensory receptors in eyes
sensory receptors in ears
27
All of the following are preys for tarsier, except...........
penguins.
small lizards.
small birds.
insects.
28
The function of tapetum lucidum, looks like the function of..........
night vision goggles.
black paper.
radio.
white paper.
29
Opaque objects and transparent objects are characterized by...........
both of them reflect all falling light.
both of them absorb all falling light.
transparent objects allow most of light to pass through, while opaque objects don't.
both of them allow all falling light to pass through.
30
The organism that has no eyes in the following species, is............
golden frog.
tarsier monky.
bull shark.
barbary fig.
31
If you see someone walking around in a dark place without hitting anything around him, so this person may............
have a lot of food energy.
have a big ability to breathe.
wear a night vision goggles.
Have the same hearing ability of bat.
32
Both tarsier and owl,..........
belong to the same species.
can swim.
are nocturnal animals.
can fly.
33
In the nocturnal animals, the tapetum lucidum is a life-saving adaptation because it helps them to........... at night.
hunt a prey and avoid to be a prey
sleep
keep their body warm
breathe
34
Painted surface........... the incoming light rays.
absorbs only
allows to pass
reflects only
absorbs and reflects
35
It is a structural adaptation, that gives fishing cat an excellent night vision.
Tapetum lucidum
Eye pupil
Eye socket
Eye lens
36
It is the opening through which the light enters the eye.
Eye lens
Tapetum lucidum
Eye pupil
Eye socket
37
Our eyes,..............
can see transparent objects, while opaque objects cannot be seen.
can see both opaque and transparent objects.
can see opaque objects, while transparent objects cannot be seen.
cannot see both opaque and transparent objects.
38
The structural adaptation that helps the fishing cat to catch a prey at night, is that its ability..........
to digest its prey easily.
of excellent night vision.
to feel the heat of prey's body.
to hide inside the forest.
39
Each of human, fishing cat and tarsier,..........
has two eyes adapted for vision.
has a mirror-like membrane in its eyes.
becomes more active at night.
has an excellent night vision.
40
through which the light waves entre the eyes.
Tapetum lucidum
Nerves
Brain
Pupil
41
If the passed light rays from a transparent objects is fallen on an opaque object then the opaque object........ through the transparent object.
reflects some light rays, so we can see it
absorbs all light rays, so we can see it
reflects some light rays, so we cannot see it
don't reflect any light rays, so we cannot see it
42
It is the place in which the eye can move inside as in human.
Tapetum lucidum
Eye pupil
Eye lens
Eye socket
43
......... Has extraordinary sight at night and bowl-shaped face.
Fishing cat
Snake
Bat
Owl
44
...........Its eyes cannot move in their sockets, and it has a bowl shaped face.
Owl
Tarsier
Human
Cat
45
through which the light rays are reflected, so eyes of nocturnal animals are glowing at night.
Tapetum lucidum
Nerves
Brain
Pupil
46
There is a inside your eye, that redirects the entered light rays.
lens
white paper
black paper
mirror
47
It is a smooth shiny surface, that reflects most of falling light
Moon
Polished mirror
lenses
Reflected light
48
It is a transparent matter, that allows light to pass through
Polished mirror
Moon
Reflected light
lenses
49
Humans have......... eyes than nocturnal animals.
smaller
bigger
stronger
sharper
50
The right path of the light rays, that is reflected from an object on our eyes causing vision is..........
eye pupil - eye lens - back of the eye - brain.
brain-back of the eye - eye pupil - eye lens.
eye pupil - brain - eye lens - back of the eye.
eye lens - eye pupil -brain-back of he eye.
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