Glass Science Ultra
Jul/100
I need the answers to these science questions please help!?
1: Which is NOT an electromagnetic wave?
visible
radio waves
ultra sonic
2: How are radio waves and visible light similar?
Both are electromagnetic waves
Both are stopped by colored glass
They are completely different things
3: Which is hotter: red hot or yellow hot?
Yellow hot
Red hot
Neither
4: How long does it take to get a response from someone on the Moon, using radio waves?
6 seconds
186,000 miles per second
8 minutes
5: What would happen to a clock traveling near the speed of light?
It would become invisible
It would slow down
It depends if it is electric or wind-up
6: How are x-rays similar to visible light?
Both go right through people
Both travel at the speed of sound
Both are electromagnetic waves
7: The length of time it takes light to go from the sun to the earth, 93,000,000 miles distant, is about
20min
50 seconds
8 1/3 minutes
help please, desperate moment!!!
1. ultra sonic (because it's a sound wave)
2. Both are electromagnetic waves
3. Yellow hot (red hot is not very hot)
4. 6 seconds (that's a gues, but I think it's correct)*
5. It would slow down
6. Both are electromagnetic waves
7. 8 1/3 minutes (this is why I think 6 seconds is probably right for #4.
By the way, the other posters are right--how does getting us to do your homework help you learn anything?
*JUST A MINUTE--I went searching and found some important info about question #4. This is from Aerospaceweb.org:
"Radio waves, like all forms of electromagnetic waves, travel at the speed of light. Unlike the speed of sound that changes depending on the substance through which the sound wave travels, the speed of light is a constant. The speed of light has been measured to be about 9.836 x 108 ft/s (2.998 x 108 m/s) or 186,200 miles per second. . . . In other words, it takes only about one and a quarter seconds for radio signals to travel between astronauts on the Moon and ground controllers on Earth. This lag is pretty minimal and made communications between the astronauts and Earth nearly real time."
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