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Electromagnetic
Science Unit 3 Lesson 3
| Question | Answer |
|---|---|
| Light waves are what type of wave? | Transverse |
| How can light waves be modeled? | As a ray |
| What is a ray? | a line of energy that continues in one direction until it hits an object |
| What is a line of energy that continues in one direction until it hits an object? | Ray |
| Light rays can be…. | Reflected, refracted, absorbed |
| What does it mean to reflect? | Bounce off a surface and move in a new direction |
| What word means bounce off a surface and move in a new direction? | Reflect |
| What does refract mean? | Bend |
| What word means bend? | Refract |
| What does absorb mean? | To take in |
| What word means to take in? | Absorb |
| What do light waves allow us to do? | See objects |
| Why are we able to see objects? | Light waves |
| What must light do before we see it? | Reflect off an object |
| What happens when light reflects off an object? | We can see it |
| What are some parts of the eyes? | Pupil, lens, retina |
| What do pupils, lens, and retinas make up? | The eye |
| What is the black hole in your eye that allows light in? | Pupi. |
| What does a pupil do? | Allows light into your eye |
| What does a pupil look like? | A black hole |
| What part of the eye bends and focuses images? | Lens |
| What is the job of a lens? | Bend and focus images |
| What part of the eye receives the image and sends electrical messages to the brain to be decoded? | Retina |
| What is the job of the retina? | To receive images and sends electrical messages electrical messages to the brain to be decoded |
| What determines color? | Wavelength |
| How do we see that a banana is yellow? | Light reflects off the banana and the wavelength |
| What connects the eye to the brain? | Optic nerve |
| What is the optic nerve? | Connects the eye to the brain |
| What 3 states can matter be? | Transparent, translucent, or opaque |
| What lets no light through? | Opaque |
| What is opaque | Does not let light through |
| What is translucent | Lets some light through, but not a lot |
| What lets some light through, but not a lot? | Translucent |
| What is transparent? | Lets light through and can be seen through clearly |
| What lets light through and can be seen through clearly? | Transparent |
| What determines if something is transparent, translucent, or opaque? | How much matter there is |
| Visible wavelengths are between ——- and ——- nanometers | 380-780 |
| How many nanometers are in a millimeter? | 1 million |
| If waves are outside the 380-780 nanometer range…. | Humans cannot see it |
| What kind of waves are invisible to humans? | X-rays, Microwave, radio waves |
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