Vocab
to give off
emit
Your friend says that she heard about a special type of ink that is only visible when it is out in the sun. Can light from the sun cause this ink to become visible?
A. yes. The ink can take in energy from the light, causing it to become visible.
B. No. Light can only change things by warming them up, so it cannot make the ink become visible.
C. Yes. Light from the sun can pull energy out of the ink, causing it to become visible.
D. No. Light is not a physical thing, so it cannot change physical things like ink.
A. Yes. The ink can take in energy from the light, causing it to become visible.
Do all materials absorb energy from light the same way?
no
Why would wearing all white on a summer day may help keep you cool?
Because white reflects all visible light meaning the energy will not make a change to the fabric.
Your friend shows you a special kind of paper that can change color. He says that it will change color if it is out in the sun. Can light from the sun cause the paper to change color?
A. No. Light is not a physical thing, so it cannot change physical things like paper.
B. Yes. The paper can take in energy from the light, causing it to change color.
C. Yes. Light from the sun can pull energy out of the paper, causing it to change color.
D. No. Light can only change things by warming them up, so it cannot cause the paper to change color.
B. Yes. The paper can take in energy from the light, causing it to change color.
a pattern that describes how energy is carried from one place to another
wave
If a car sits out in the sun every day for a long time, can light from the sun damage the car’s paint?
A. Yes. The paint can take in energy from the light, causing it to be damaged.
B. No. Light is not a physical thing, so it cannot change physical things like paint.
C. Yes. Light from the sun can pull energy out of the paint, causing it to be damaged.
D. No. Light can only change things by warming them up, so it cannot damage the car’s paint.
A. Yes. The paint can take in energy from the light, causing it to be damaged.
What does light do? (think of the vocabulary definition of what light is, what from the light can cause materials to change)
light is a type of wave that carries energy from one place to another, even through empty space
why you might overheat if you wore a fully black outfit on a sunny summer day?
Because black absorbs all visible light, the cange from the energy will heat the fabric up.
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. Yes. Light can pull energy out of the glue, causing it to dry.
B. No. Light is not a physical thing, so it cannot change physical things like glue.
C. No. Light can only change things by warming them up, so it cannot cause glue to dry.
D. Yes. The glue can take in energy from the light, causing it to dry.
D. Yes. The glue can take in energy from the light, causing it to dry.
a type of wave that carries energy from one place to another, even through empty space
light
Alex has a type of rock called calcite, which sometimes glows. He puts the calcite under a desk lamp but the calcite does not glow. Then he puts it under an ultraviolet lamp and the calcite glows. Why does ultraviolet light make the calcite glow when light from the desk lamp does not?
A. Because ultraviolet light pulls energy out of the calcite, and light from the desk lamp does not.
B. Because calcite can take in energy from ultraviolet light but not from the light from the desk lamp.
C. Because ultraviolet light carries energy, and light from the desk lamp does not.
D. Because ultraviolet light carries glowing molecules, and light from the desk lamp does not.
B. Because calcite can take in energy from ultraviolet light but not from the light from the desk lamp.
What must happen for the energy from light to change a substance?
It must be absorbed
A red apple reflects red light. Was the red light able to change the apple? Explain why or why not.
No, light that reflects can't cause change because the energy is bouncing off the object.
Khaled has a red toy that is painted with a special kind of paint. When he puts the toy under a desk lamp, it stays red. When he puts the toy under an infrared lamp, it turns blue. Why does the infrared light cause the toy to turn blue when the light from the desk lamp does not?
A. Because infrared light carries colored molecules, and light from the desk lamp does not.
B. Because infrared light pulls energy out of the paint, and light from the desk lamp does not.
C. Because the paint can take in energy from infrared light but not from the light from the desk lamp.
D. Because infrared light carries energy, and light from the desk lamp does not.
C. Because the paint can take in energy from infrared light but not from the light from the desk lamp.
to take in
absorb
Shonda is learning about a new kind of material that might be used to make new satellites, and she wonders if light can damage the material. The table below shows what happens when different types of light hit the material.
Based on this information, which type of light is more likely to damage the material?
X-ray: reflected Gamma ray: transmitted
A. Neither type of light is likely to damage the material because the material does not take in energy from either the X-ray light or the gamma ray light.
B. 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.
C. The X-ray light is more likely to damage the material because the X-ray light bounces off of the material, which means that it has more energy.
D. The gamma ray light is more likely to damage the material because the gamma ray light can pull energy out of the material when it passes through the material.
A. Neither type of light is likely to damage the material because the material does not take in energy from either the X-ray light or the gamma ray light.
Will is learning about a new kind of plastic used to make models. He learns that infrared light is absorbed by the plastic, X-ray light is transmitted through the plastic, and visible light is reflected off the plastic. Will wonders if the plastic will melt if he shines the lights on it. Can light cause the plastic to melt? Why or why not? Does it matter what type of light he shines on the plastic?
Infrared light would carry the energy to the material. Since it is absorbed it could cause a change.
Ultraviolet light is transmitted through a clear glass window. Can the ultraviolet change the window? Explain why or why not.
Yes, it will heat the window up because the UV light is absorbed.
Omar has a piece of rock called quartz. He wonders whether light can cause the quartz to become warm. The table below shows what happens when different types of light hit the quartz.
Infrared: reflected Visible: transmitted
Based on this information, which type of light is more likely to cause the quartz to become warm?
A. 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.
B. The infrared light can cause the quartz to become warm because the infrared light bounces off the quartz, which means that it has more energy.
C. Neither type of light can cause the quartz to become warm because the quartz does not take in energy from either the infrared light or the visible light.
D. The visible light can cause the quartz to become warm because the visible light can pull energy out of the quartz when it passes through the quartz.
C. Neither type of light can cause the quartz to become warm because the quartz does not take in energy from either the infrared light or the visible light.
the maximum height of a wave
amplitude
Alina notices that when she shines a desk lamp on a mirror, nothing happens. When she shines an infrared lamp on the mirror, the mirror starts to get warmer. Why does light from the infrared lamp warm the mirror when light from the desk lamp does not?
A. Because infrared light carries heat molecules, and light from the desk lamp does not.
B. Because infrared light pulls energy out of the mirror, and light from the desk lamp does not.
C. Because the mirror can take in energy from infrared light but not from the light from the desk lamp.
D. Because infrared light carries energy, and light from the desk lamp does not.
C. Because the mirror can take in energy from infrared light but not from the light from the desk lamp.
Sierra has a special kind of liquid rubber. She knows that ultraviolet light is absorbed by the rubber, X-ray light is transmitted through the rubber, and blue light is reflected off the rubber. Sierra wonders if the liquid rubber will become solid if she shines the lights on it. Can light cause the rubber to become solid? Why or why not? Does it matter what type of light she shines on the rubber?
the light can cause it to change, specifically the UV light because it is absorbed into the rubber, the energy could cause it to change.
Grace is testing ultraviolet light and infrared light on a mystery object. The mystery object reflects the ultraviolet light and transmits the infrared light. Will either type of light be able to change the mystery object? Why?
No, since neither type of light/energy absorbs into the mystery object, the object will not change.
Kayla wonders if lasers will be able to cut a hole in a piece of silicone, which is a change that requires energy. The table below shows what happens when different types of light from lasers hit the silicone.
Based on this information, which type of laser light can cut a hole in the silicone?
Helium: reflected Carbon dioxide: Absorbed Diode: Transmitted
A. The helium-neon laser can cut a hole in the silicone.
B. The carbon dioxide laser can cut a hole in the silicone.
C. Any of these types of light can cut a hole in the silicone, because all light carries energy that can cause materials to change.
D. THe diode laser can cut a hole in the silicone.
B. The carbon dioxide laser can cut a hole in the silicone.