Vocab I
Key Concepts
Waves and their Properties
Sample Test Questions
Random Grab Bag
100
We study light waves by observing the changes they make to __________.
What is matter?
100
These types of waves do not need a medium to travel through and can, therefore, travel through space!
What are Light Waves?
200
In order for an object to be changed by light, it must _______ some of the energy from the light.
What is absorb
200
This is the skin pigmentation that can absorb UV light and protect you from skin cancer.
What is melanin?
300
The table below shows what happens when different types of light hit aluminum. Based on this, which type of light is likely to heat up aluminum?
A. The X-ray light is more likely to heat up the aluminum because the X-ray light can pull energy out of the aluminum when it passes through the aluminum. The X-ray light is more likely to heat up the aluminum because the X-ray light can pull energy out of the aluminum when it passes through the aluminum.
B. The light is more likely to heat up the aluminum because the ultraviolet light bounces off the aluminum, which means that it has more energy.The ultraviolet light is more likely to heat up the aluminum because the ultraviolet light bounces off the aluminum, which means that it has more energy.
C. There is no way to know because they are two different types of light, and different types of light can change a material in different ways. There is no way to know because they are two different types of light, and different types of light can change a material in different ways.
D. Neither type of light is likely to heat up the aluminum because the aluminum does not take in energy from either the X-ray light or the ultraviolet light.Neither type of light is likely to heat up the aluminum because the aluminum does not take in energy from either the X-ray light or the ultraviolet light.
300
This is the reason that the same amount of sunlight can cause different rates of skin cancer.
What is melanin and the type of light hitting Earth's surface?
400
When a light wave hits a material, these are the three things the material can do with the light.
What is to absorb, transmit, or reflect?
400
Tyrel is learning about a certain kind of metal used to make satellites. He learns that infrared light is absorbed by the metal, X-ray light is transmitted through the metal, and visible light is reflected off the metal. Tyrel wonders if the metal will get warm if he shines the lights on it.
Can light cause the metal to get warm? Why or why not? Does it matter what type of light shines on the metal?
What is Yes, light can cause the metal to get warm because light carries energy that can cause materials to change. Yes, the type of light matters because materials can only take in energy from some types of light and not others. Only the type of light that is absorbed (the infrared light) can cause the metal to get warm, because energy is not absorbed and the material does not change if it reflects or transmits the light?
400
Why does Australia get more UV light than other places?
What is the hole in the Ozone and thinning spots in the ozone layer?
500
When light is transmitted through or reflected off a material, the energy is not _________, so the material does not ________.
What is "The energy is not absorbed, so the material does not change".
500
The distace between two crest, or two troughs, is called the _____________.
What is the wavelegth?
500
Alika finds a certain kind of butterfly near her house. She reads that ultraviolet light is absorbed by the butterfly’s wings, red light is transmitted through the butterfly’s wings, and green light is reflected off the butterfly’s wings. Alika’s friend Claire tells her that if you shine light on the butterfly, its wings will glow.
Can light cause the butterfly’s wings to glow? Why or why not? Does it matter what type of light Alika shines on the butterfly?
What is Yes, light can cause the butterfly’s wings to glow because light carries energy that can cause materials to change. Yes, the type of light matters because materials can only take in energy from some types of light and not others. Only the type of light that is absorbed (the ultraviolet light) can cause the butterfly’s wings to glow, because energy is not absorbed and the material does not change if it reflects or transmits the light.
500
Why is the skin cancer rate in Australia so high?
What is Australia has a high skin cancer rate both because it receives more UV light, and because the population has many people with lower levels of melanin?