Interactions of Matter & Energy

Interactions of Matter & Energy: Energy transfer, waves, lenses, mirrors, electromagnetic spectrum, etc.

Why does light behave as shown in the image when it passes from air to glass?

Light slows down when it passes into a denser medium.

What colors are being reflected?

none of the colors in the color spectrum

What is Light?

Energy carried by electromagnetic waves

Which type of waves in the Electromagnetic Spectrum are used to send to and from cell phones?

Microwaves

For waves in any medium, as the wavelength decreases, what happens to the frequency?

It increases

True or False: Light waves CANNOT travel in a vacuum, like space

False

_____ is a lens that is thicker in the middle.

Convex

Light waves bouncing off of a lake is an example of:

Reflection

A student placed a pencil in a cup of water. The pencil appears broken because light-

bends when it passes through water

A red bird appears red because it REFLECTS what color

Red

Which of the following photos demonstrates opaque objects?

rocks

What is a translucent object?

An object where light can partially travel through

Which electromagnetic waves allow us to diagnose & treat cancer?

Gamma rays

The color that absorbs visible light waves is:

Black

Which type of electromagnetic waves can be used turn look at a broken bone in your body?

X-rays

What color is being reflected off a green balloon?

Green

when light is stored inside of an object and turns into heat energy

absorbtion

Electromagnetic waves that help your body produce vitamin D are called?

ulraviolet rays

Which type of wave is shown in the above picture?

Electromagnetic

What does reflection mean?

bouncing light

We see and apple as being red because ________________________________.

All of the colors are absorbed except for the color red. Red is being reflected in to our eyes.

What type of waves does light travel in?

transverse

What type of material blocks light and creates a shadow?

opaque material

which type of lens

concave

The material used in these lights is ___.

translucent

Longest Wavelengths and Lowest Frequencies?

Radio waves

Which of the following photo would best demonstrate refraction?

duck

White light is a combination of

All the colors of the rainbow

Which of electromagnetic wave has the greatest amount of energy

Gamma rays

_____ is a lens that is thinner in the middle..

Concave

__________ materials allow some light to partially pass through, but not in a straight path.

Translucent

What happens when light hits a shiny or smooth surface?

It is reflected

Based on your knowledge of the electromagnetic spectrum, why are radio waves considered harmless while ultraviolet waves and x-rays considered harmful?

Radio waves have longer wavelengths, lower frequency, and lower energy than ultraviolet waves and x-rays.

What is the visible spectrum?

The part of light waves we can see

What is frequency measured in?

Hertz (Hz)

Which has the highest energy: longer or shorter wavelength?

Shorter

What is the correct order of the visible light spectrum starting with the longer wavelength?

Red, orange, yellow, green, blue, indigo, violet

High energy light consist of ________ wavelength and _______ frequency

short, high

Which color of light has the longest wavelength?

Red

The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:

reflection

In order to see a picture it must

reflect light

What type of matter allows ALL light to pass through?

transparent material

Which form of light travels the fastest?

All travel the same speed

Which color of light has the shortest wavelength?

Blue

which type of lens

Convex

what does refraction mean?

bending light

What type of electromagnetic radiation or light can we see?

visible light

How are we able to see the color white?

all colors are reflected

Which of the following is a transparent object?

An object where light can completely travel through

What type of matter allows SOME light to pass through?

translucent material

What do we call this tool that separates white light into the colors of the Visible Spectrum?

prism

What is it called when light bends as it moves from one substance to another?

Refraction

How is white light able to separate through a prism?

the light is being refracted