Physics Light
Name _____________________________________________________ Date __________________
Score _________
Keywords: Physics-Light
Questions
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1.
In a nutshell, what is light?
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2.
What is a photon?
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3.
Can light be understood as both a wave and particle?
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4.
When people talk about light, what do they usually mean?
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5.
What is in the electromagnetic spectrum?
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6.
On the electromagnetic spectrum, which waves have the smallest wavelengths?
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7.
What do all waves on the electromagnetic spectrum have in common?
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8.
What makes visible light so special?
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9.
How is light created?
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10.
What two oscillating fields make up electromagnetic radiation?
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11.
How long does it take light leaving a candle to reach the speed of light?
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12.
Why is ‘c’ the speed of light?
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13.
What is the speed of light in a vacuum?
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14.
How does the shoe cover technology at CalTech work?
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15.
How many FPS (Frames Per Second) can the world’s fastest camera take pictures?
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16.
About how long does it take light to travel the length of a small water bottle?
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17.
How long is a picosecond?
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18.
Does the camera show light moving smoothly through space?
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| Possible Points: 0 | |
Questions
|
1.
In a nutshell, what is light?
|
|
|
2.
What is a photon?
|
|
|
3.
Can light be understood as both a wave and particle?
|
|
|
4.
When people talk about light, what do they usually mean?
|
|
|
5.
What is in the electromagnetic spectrum?
|
|
|
6.
On the electromagnetic spectrum, which waves have the smallest wavelengths?
|
|
|
7.
What do all waves on the electromagnetic spectrum have in common?
|
|
|
8.
What makes visible light so special?
|
|
|
9.
How is light created?
|
|
|
10.
What two oscillating fields make up electromagnetic radiation?
|
|
|
11.
How long does it take light leaving a candle to reach the speed of light?
|
|
|
12.
Why is ‘c’ the speed of light?
|
|
|
13.
What is the speed of light in a vacuum?
|
|
|
14.
How does the shoe cover technology at CalTech work?
|
|
|
15.
How many FPS (Frames Per Second) can the world’s fastest camera take pictures?
|
|
|
16.
About how long does it take light to travel the length of a small water bottle?
|
|
|
17.
How long is a picosecond?
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|
|
18.
Does the camera show light moving smoothly through space?
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|
| Possible Points: 0 | |
Solutions
- The smallest quantity of energy that can be transported.
- An elementary particle without a real size that can’t be spit, only created or destroyed.
- Yes, but this is not a completely accurate description of light.
- People usually mean “visible light”, which is a very small band of the electromagnetic spectrum.
- Energy in the form of electromagnetic radiation.
- Gamma rays
- They all have the wave-particle duality.
- They all travel at ‘c’, the speed of light.
- Absolutely nothing, except that visible light is the only set of electromagnetic radiation that propagates well in water, which is probably where our eyes first evolved.
- A vast range of electromagnetic waves are created when atoms drop from a higher state of energy to a lower one. They lose energy and emit it in the form of radiation.
- A magnetic field and an electric field perpendicular to it.
- No time. Light instantly leaves the candle at the speed of light.
- No one knows. This seems to be a fundamental property of our universe, but we don’t kno why,
- 299,792,458 m/s (~300,000 km/s, or ~186,000 mi/s)
- You step into a gadget on the floor, and a shoe cover automatically wraps around your shoe.
- ?
- 2,000 picoseconds
- One picosecond is $1.0^{-12}$ or $0.000000000001$ of a second.
- No. It seems move erratically or hesitatingly, in small pauses and jumps.
- The smallest quantity of energy that can be transported.
- An elementary particle without a real size that can’t be spit, only created or destroyed.
- Yes, but this is not a completely accurate description of light.
- People usually mean “visible light”, which is a very small band of the electromagnetic spectrum.
- Energy in the form of electromagnetic radiation.
- Gamma rays
- They all have the wave-particle duality.
- They all travel at ‘c’, the speed of light.
- Absolutely nothing, except that visible light is the only set of electromagnetic radiation that propagates well in water, which is probably where our eyes first evolved.
- A vast range of electromagnetic waves are created when atoms drop from a higher state of energy to a lower one. They lose energy and emit it in the form of radiation.
- A magnetic field and an electric field perpendicular to it.
- No time. Light instantly leaves the candle at the speed of light.
- No one knows. This seems to be a fundamental property of our universe, but we don’t kno why,
- 299,792,458 m/s (~300,000 km/s, or ~186,000 mi/s)
- You step into a gadget on the floor, and a shoe cover automatically wraps around your shoe.
- ?
- 2,000 picoseconds
- One picosecond is $1.0^{-12}$ or $0.000000000001$ of a second.
- No. It seems move erratically or hesitatingly, in small pauses and jumps.