Light Travels
Waves
Light Sources
Amplify Questions
Skin Cancer
100
Light and its energy passes through an object.
What is transmit?
100
These type of waves can travel through empty space in a straight line.
Light waves.
100
The sun emits only one type of light.
True or False
False, the sun emits many different types of light.
100
Can light from the sun cause nail polish to change color?
A. No. Light is a physical thing so it can't change physical things like nail polish.
B. Yes. Light from the sun can pull energy out of the nail polish.
C. Yes. Light carries energy and the nail polish can take in energy from the light.
D. No. Light can only change things by warming them up.
C. Yes. Light carries energy and the nail polish can take in energy from the light.
100
Which rays from the sun are damaging to the skin?
Ultraviolet rays (UV rays).
200
Light waves travel in a...
What is a straight line?
200
The height of the wave is called the _______.
amplitude
200
Are any of these 3 lasers a different type of light from the other two?
A. Yes, laser 2.
B. Yes, laser 3.
C. Yes, all 3 lasers are different.
D. No, they are all the same
A. Laser 2 has a different wavelength.
200
Santiago’s teacher showed him a kind of cloth that changes color if it is placed out in the sun. It does not change color if it is placed under a desk lamp. Why?
A. Because light from the sun carries colored molecules, and light from the desk lamp does not.
B. Because light from the sun pulls energy out of the cloth, and light from the desk lamp does not.
C. Because the sun gives off a type of light that carries energy, and light from the desk lamp does not.
D. Because the cloth can take in energy from the light from the sun but not from the light from the desk lamp.
D. Because the cloth can take in energy from the light from the sun but not from the light from the desk lamp.
200
Causes different skin tones/colors.
What is melanin?
300
Energy is not absorbed and light bounces off.
What is reflect?
300
The distance from peak to peak of a wave.
Wavelength
300
Which one of these waves has the highest amplitude and how can you tell?
Wave/laser 2. You can tell because the height from the peak of the wave to the trough of the wave is higher on wave 2.
300
Which type of light can heat up aluminum according to this table?
Neither
300
Why do people get a "sun tan" after being in the sun.
Once their skin is damaged by the sun, their skin begins producing melanin to help protect their skin from future sun damage.
400
All light travels past the atmosphere.
False.
400
The amplitude of a wave determines its _______.
intensity or strength
400
Calcite is a type of rock that glows under a UV light lamp. However, it does not glow under a regular desk lamp. Why?
A. UV light carries energy and light from the desk lamp does not.
B. UV light pulls energy out of the calcite.
C. Calcite can take in/absorb UV light but not light from the desk lamp.
D. UV light carries glowing molecules.
C. Calcite can take in/absorb UV light but not light from the desk lamp.
400
Your friend says that there is a kind of glue that only dries when it is exposed to a special type of light. Can light cause glue to dry?
A. No. Light can only change things by warming them up, so it cannot cause glue to dry.
B. Yes. The glue can take in energy from the light, causing it to dry.
C. Yes. Light can pull energy out of the glue, causing it to dry.
D. No. Light is not a physical thing, so it cannot change physical things like glue.
B. Yes. The glue can take in energy from the light, causing it to dry.
400
How/why do people develop skin cancer?
When people are exposed to excess amounts of sunlight the UV rays can damage their skin & the genetic material in your cells
500
Australia and Brazil have different amounts of UV light. Why?
Australia has less Ozone in the atmosphere.
500
Different light is caused by this wave characteristic.
Wavelength.
500
Pedro has a special type of glass that he wants to melt. He wonders if light can cause the glass to melt. The list below shows what happens when different types of light hit the glass. Which one will melt the model?
A. Infrared light- Absorbed by the glass.
B. Yellow light- Reflected off the glass.
C. X-ray light- Transmitted through the glass.
A. Infrared light- Absorbed by the glass.
500
List all of the types of light the sun emits.
Gamma rays, X-rays, Ultraviolet, visible (the colors), infrared, microwave, radio waves.
500
How does melanin help protect you from skin cancer?
Melanin acts like a barrier that absorbs the UV light before it damages your DNA.