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Light and Sight - grade 4
Light and Sight - grade 4
Which of the following organs are working together for seeing different objects ?.........
Eyes and brain.
Nose and brain.
Tongue and brain.
Ears and brain.
The pupils of human eyes open......... that of nocturnal animals.
Both light energy and sound energy..........
the light energy can be seen, while sound energy cannot be seen.
cannot be seen.
can be seen.
the sound energy can be seen, while light energy cannot be seen.
absorbs some of light that fall on it only.
allows light to pass through.
bounces off some of light that fall on it only.
absorbs some of light that fall on it and bounces off the other.
As the eye lens can redirect the entered light rays, so this lens must be............
a reflecting material.
an opaque material.
a transparent material.
Animals that have a strong vision to hunt at night, include...........
owl and cat.
owl and snake.
owl and bat.
cat and snake.
Owls and.......... cannot move their eyes in their sockets.
through which sensory receptors of the eyes send messages to the brain.
Polished mirror, causes falling light rays.........
to pass through it.
to diffuse like that of rough surfaces.
to reflect at the same angle they strick the polished mirror. polished mirror.
to reflect at different directions they strick the polished mirror.
It concentrates the light rays on a single point.
.......... Has poor night vision, so it depends on the sound that bounces off prey's body.
........... Doesn't have spectacular night vision, but depends on night vision goggles.
The energy which must present to make our eyes able to see the objects around us, is.......... energy.
It is a rough surface, that scatter reflected light rays.
Piece of cloth
The reflected light rays from an object enter the eye through.........
All the following things are considered as a light source, except.........
the light lamp.
The wide pupils of human eyes, letting in......... light than those of fishing cat
large amount of
very large amount of
Our eyes send.......... messages to the brain, where the information is processed.
All of the following are transparent objects, except............
All of the following are correct about the function of the eye lens, except it the entered light rays...........
............ energy affects the sensory receptors in eyes of living organisms causing vision.
Nocturnal animals depend on all the following senses to find out their preys a night, excepte..........
All the following living organisms have tapetum lucidum, except...........
You cannot see through all the following objects, except..........
a glass of water.
If the eye lens is made up of an opaque material, then this eye...........
can see the far objects only.
can see both the far and the near objects.
can see the near objects only.
cannot see any objects around it.
To know what you are seeing and recogonize it, the.......... must receive sensory impulses from eyes.
sensory receptors in ears
sensory receptors in eyes
All of the following are preys for tarsier, except...........
The function of tapetum lucidum, looks like the function of..........
night vision goggles.
Opaque objects and transparent objects are characterized by...........
both of them reflect all falling light.
both of them absorb all falling light.
both of them allow all falling light to pass through.
transparent objects allow most of light to pass through, while opaque objects don't.
The organism that has no eyes in the following species, is............
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.
wear a night vision goggles.
have a big ability to breathe.
Both tarsier and owl,..........
belong to the same species.
are nocturnal animals.
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
keep their body warm
Painted surface........... the incoming light rays.
allows to pass
absorbs and reflects
It is a structural adaptation, that gives fishing cat an excellent night vision.
It is the opening through which the light enters the eye.
cannot see both opaque and transparent objects.
can see opaque objects, while transparent objects cannot be seen.
can see both opaque and transparent objects.
can see transparent objects, while opaque objects cannot be seen.
The structural adaptation that helps the fishing cat to catch a prey at night, is that its ability..........
to hide inside the forest.
to digest its prey easily.
to feel the heat of prey's body.
of excellent night vision.
Each of human, fishing cat and tarsier,..........
has two eyes adapted for vision.
has an excellent night vision.
becomes more active at night.
has a mirror-like membrane in its eyes.
through which the light waves entre the eyes.
If the passed light rays from a transparent objects is fallen on an opaque object then the opaque object........ through the transparent object.
don't reflect any light rays, so we cannot see it
reflects some light rays, so we can see it
reflects some light rays, so we cannot see it
absorbs all light rays, so we can see it
It is the place in which the eye can move inside as in human.
......... Has extraordinary sight at night and bowl-shaped face.
...........Its eyes cannot move in their sockets, and it has a bowl shaped face.
through which the light rays are reflected, so eyes of nocturnal animals are glowing at night.
There is a inside your eye, that redirects the entered light rays.
It is a smooth shiny surface, that reflects most of falling light
It is a transparent matter, that allows light to pass through
Humans have......... eyes than nocturnal animals.
The right path of the light rays, that is reflected from an object on our eyes causing vision is..........
brain-back of the eye - eye pupil - eye lens.
eye pupil - eye lens - back of the eye - brain.
eye lens - eye pupil -brain-back of he eye.
eye pupil - brain - eye lens - back of the eye.
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