Vocabulary
What does the word transmit mean?
to pass through
True or False: Light travels in straight lines.
True
What does transparent mean?
Can partially see through - Some light reflects, some light transmits.
Where is the retina located?
In the back of the eye
True or False: In order for a one way mirror to work, there needs to be light in each room.
False
What does the word reflect mean?
to bounce back, not being absorbed
True or False: Light needs to reflect off of an object for our eyes to see it.
True
What does transparent mean?
Can completely see through - all light transmits.
After light is reflected off of an object, it travels to our eye. What part of the eye does it hit first?
The lens
True or False: A one way mirror has a thick layer of silvering with no gaps.
False
What does the word impurities mean?
contaminated
Name three sources of light.
Answers may vary
Give an example of an opaque material.
Answers may vary.
How does the retina contribute to the process of vision?
It turns light into electrical signals?
What process is involved in making a mirror by adding a thick layer of smooth metal to the back of the glass?
Silvering
What does nearsighted mean?
You can see things near you, but you cannot see far away.
What happens when light shines on an object?
It reflects off, transmits through, or both, depending on the material.
What material is placed behind a regular mirror to ensure that no light passes through?
Opaque
What part of the eye transforms the electrical signals to the brain?
Optic Nerve
What happens to the one way mirror once the silvering is sprayed on it?
Some light reflects and some light transmits because of the gaps in the silvering.
What does farsighted mean?
You can see far away but not things that are close by.
What happens when light shines on a regular mirror?
The mirror reflects all of the light.
Why is a piece of glass transparent but not completely so?
It transmits most of the light but reflects some due to impurities like dust.
How do eyeglasses help correct vision problems?
By allowing the eye to focus light in the right spot on the retina
Explain how a one-way mirror is different from both glass and a regular mirror.
It reflects and transmits light in almost equal amounts.