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Light and Sight - grade 4
Light and Sight - grade 4
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تكرار
1
Which of the following organs are working together for seeing different objects ?.........
Ears and brain.
Tongue and brain.
Nose and brain.
Eyes and brain.
2
The pupils of human eyes open......... that of nocturnal animals.
narrower than
wider than
typical to
similar to
3
Both light energy and sound energy..........
can 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.
cannot be seen.
4
Opaque material............
allows light to pass through.
bounces off some of light that fall on it only.
absorbs some of light that fall on it only.
absorbs some of light that fall on it and bounces off the other.
5
As the eye lens can redirect the entered light rays, so this lens must be............
a mirror-like.
a transparent material.
an opaque material.
a reflecting material.
6
Animals that have a strong vision to hunt at night, include...........
owl and bat.
owl and snake.
cat and snake.
owl and cat.
7
Owls and.......... cannot move their eyes in their sockets.
fishing cats
humans
arctic foxes
tarsiers
8
through which sensory receptors of the eyes send messages to the brain.
Pupil
Nerves
Tapetum lucidum
Brain
9
Polished mirror, causes falling light rays.........
to pass through it.
to reflect at the same angle they strick the polished mirror. polished mirror.
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 socket
Eye lens
Eye pupil
Tapetum lucidum
11
.......... Has poor night vision, so it depends on the sound that bounces off prey's body.
Fishing cat
Bat
Owl
Snake
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
Moon
Polished mirror
lenses
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.........
fire.
the light lamp.
eyes.
the Sun.
17
The wide pupils of human eyes, letting in......... light than those of fishing cat
very large amount of
large amount of
less
more
18
Our eyes send.......... messages to the brain, where the information is processed.
electrical impulses
hearing
light impulses
written
19
All of the following are transparent objects, except............
water.
glass.
paper.
air.
20
All of the following are correct about the function of the eye lens, except it the entered light rays...........
diffuses
collects
concentrates
focuses
21
............ energy affects the sensory receptors in eyes of living organisms causing vision.
Light
Electric
Sound
Heat
22
Nocturnal animals depend on all the following senses to find out their preys a night, excepte..........
hearing sense.
taste sense.
smelling sense.
sight sense.
23
All the following living organisms have tapetum lucidum, except...........
horses.
fishing cats.
snakes.
dogs.
24
You cannot see through all the following objects, except..........
painted surface.
human body.
polished mirror.
a glass of water.
25
If the eye lens is made up of an opaque material, then this eye...........
cannot see any objects around it.
can see the far objects only.
can see both the far and the near objects.
can see the near objects only.
26
To know what you are seeing and recogonize it, the.......... must receive sensory impulses from eyes.
spinal cord
sensory receptors in eyes
brain
sensory receptors in ears
27
All of the following are preys for tarsier, except...........
small lizards.
insects.
penguins.
small birds.
28
The function of tapetum lucidum, looks like the function of..........
black paper.
radio.
night vision goggles.
white paper.
29
Opaque objects and transparent objects are characterized by...........
both of them allow all falling light to pass through.
both of them absorb all falling light.
transparent objects allow most of light to pass through, while opaque objects don't.
both of them reflect all falling light.
30
The organism that has no eyes in the following species, is............
bull shark.
barbary fig.
golden frog.
tarsier monky.
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 the same hearing ability of bat.
have a big ability to breathe.
wear a night vision goggles.
32
Both tarsier and owl,..........
can fly.
belong to the same species.
can swim.
are nocturnal animals.
33
In the nocturnal animals, the tapetum lucidum is a life-saving adaptation because it helps them to........... at night.
sleep
keep their body warm
breathe
hunt a prey and avoid to be a prey
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.
Eye pupil
Eye socket
Tapetum lucidum
Eye lens
36
It is the opening through which the light enters the eye.
Eye lens
Eye pupil
Tapetum lucidum
Eye socket
37
Our eyes,..............
cannot see both opaque and transparent objects.
can see transparent objects, while opaque objects cannot be seen.
can see opaque objects, while transparent objects cannot be seen.
can 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 feel the heat of prey's body.
of excellent night vision.
to hide inside the forest.
to digest its prey easily.
39
Each of human, fishing cat and tarsier,..........
becomes more active at night.
has two eyes adapted for vision.
has an excellent night vision.
has a mirror-like membrane in its eyes.
40
through which the light waves entre the eyes.
Nerves
Tapetum lucidum
Pupil
Brain
41
If the passed light rays from a transparent objects is fallen on an opaque object then the opaque object........ through the transparent object.
absorbs all light rays, so we can see it
don't reflect any light rays, so we cannot see it
reflects some light rays, so we cannot see it
reflects some light rays, so we can see it
42
It is the place in which the eye can move inside as in human.
Eye pupil
Eye lens
Tapetum lucidum
Eye socket
43
......... Has extraordinary sight at night and bowl-shaped face.
Snake
Owl
Fishing cat
Bat
44
...........Its eyes cannot move in their sockets, and it has a bowl shaped face.
Cat
Tarsier
Human
Owl
45
through which the light rays are reflected, so eyes of nocturnal animals are glowing at night.
Brain
Pupil
Nerves
Tapetum lucidum
46
There is a inside your eye, that redirects the entered light rays.
lens
mirror
black paper
white paper
47
It is a smooth shiny surface, that reflects most of falling light
Polished mirror
lenses
Reflected light
Moon
48
It is a transparent matter, that allows light to pass through
lenses
Moon
Reflected light
Polished mirror
49
Humans have......... eyes than nocturnal animals.
bigger
stronger
sharper
smaller
50
The right path of the light rays, that is reflected from an object on our eyes causing vision is..........
eye pupil - brain - eye lens - back of the eye.
eye lens - eye pupil -brain-back of he eye.
eye pupil - eye lens - back of the eye - brain.
brain-back of the eye - eye pupil - eye lens.
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