You didn't wave back.
Melatonin or Melanin?
Electromagnetic Spectrum
Broken Back Bend
Did you see me wave?
100
the highest point, or peak, of a wave
Crest
100
Are all light waves the sun emits harmful to human genetics?
No
100
Do light waves need a medium/matter to travel?
No. (Light travels through space, which has little to no matter, to reach earth)
100
What is the bending of light as it passes from one transparent substance (medium) into another.
Refraction
100
What type of wave is this AND what kind of energy does is transfer?
Transverse wave. Light energy.
200
the lowest point, valley, or "dip" of a wave
Trough
200
Why won't I get tan from a household lightbulb, but I will get tan from the sun or tanning bed?
UV rays are needed for tanning and household light bulbs do not emit UV rays.
200
Which wave is the longest wave on the electromagnetic spectrum, AND how long is it estimated to be?
Radio wave. Larger than the diameter of the earth.
200
Light rays strike a surface and bounce back, enabling objects to be seen.
Reflection
200
What type of wave is this AND what kind of energy does it transfer?
Longitudinal wave. Sound energy.
300
the maximum distance a wave moves from its resting position, measuring its "height" or energy level
Amplitude
300
What happens to a human's DNA after prolonged exposure to UV rays?
DNA will continue to break apart and eventually develop into melanoma (skin cancer).
300
Which section in the electromagnetic spectrum can we as humans see with our eyes?
Visible Spectrum
300
What is the main difference between reflection and refraction? Give examples: one for reflection. one for refraction.
Reflection: Bouncing
Refraction: Bending
Examples: Answers may vary
300
What part of the wave is "c." representing?
Amplitude.
400
set amount of time for a frequency to occur
Period
400
What is melanin AND how does it interact with sunlight?
Melanin is natural pigmentation in our skin, hair, and organs. It give the color to skin and hair.
In the sun it acts as natural sunscreen to protect DNA from destruction. The UV rays cause the melanin to multiply and get darker.
400
Apart from the energy they carry, what is one of the determining factors that separates the different waves of the electromagnetic spectrum from one another. i.e. what makes a radio wave different from an X-ray?
Wavelength
400
When we completed the "Breaking Light Lab", how was it possible to see a rainbow shining on the different colored paper?
When the light shone through the water, the water bent the light (refracted) which caused the colors of the white light to separate into their individual colors.
400
Frequency = 3Hz
500
the number of wave crests (high points) or complete cycles that pass a fixed point in a set amount of time, usually one second
Frequency
500
People that live closer to the equator tend to have more ___________ than people who live father from the equator. Why is that?
Melanin. People's melanin in their skin has adapted to living closer to the equator because the sunlight is the most harsh. They need more protection from the sun, so their body adapts to create more melanin.
500
List all of the types of waves the sun emits. (7)
Gamma rays, X-rays, Ultraviolet (UV), Visible, Infrared, Microwaves, Radio Waves
500
Why do rainbows appear after it rains?
Because sunlight acts as a light source, and the remaining water droplets in the air act as millions of tiny prisms, causing light to bend (refraction) and bounce (reflection).
500
You will be drawing two waves.
First wave: draw a wave with high energy.
Underneath that wave,
Second wave: draw a wave with low energy.
Answers will vary.