1. The images above show particles in a medium. Which of the following shows the worst conditions for a sound wave travel?
A
B
C
D
is the answer A?
Which of the following correctly describes a radio wave?
A long wavelength and high frequency
B long wavelength and low frequency
C short wavelength and low frequency
D short wavelength and high frequency
is the answer B?
When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is
A absorbed
B reflected
C refracted
D transmitted
is the answer A?
On the light wave above, the property indicated by the arrow determines which characteristic of light?
A brightness
B speed
C reflection
D energy
How are sonar and ultrasound imaging technologies different?
A They use different types of sound waves
B They use sound to see places that otherwise cannot be seen
C They are used for different purposes
D They are used to examine things
Certain seismic waves travel as
A electromagnetic and transverse waves
B visible light and longitudinal waves
C longitudinal and transverse waves
D compression and visible light waves
What do some bats use to locate food and to navigate?
A seismic waves
B echolocation
C radio waves
D ultraviolet light
A broadcasting station sends information to your radio or television with
A microwaves
B ultrasound waves
C mechanical waves
D radio waves
Light waves strike a lamp shade. What property of light is demostrated?
A diffuse reflection
B diffraction
C refraction
D regular reflection
The curies discovered which two elements?
A radium and polonium
B cesium and thorium
C mercury and hydrogen
D cadmium and francium
Why does the wave of light bend toward the normal as it enter water?
A Water has a lower index of refraction than air, so the wave slows down
B Water has a lower index of refraction than air, so the wave speeds up
C Water has a higher index of refraction than air, so the wave speeds up
D Water has higher index of refraction than air, so the wave slows down
12. AM signals travel as changes in
A the speed of the wave
B the amplitude of the wave
C the frequency of the wave
D the loudness of the wave
Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously?
A fluorescence
B rarefaction
C radioactivity
D electromagnetic
Which letter shows the type of wave that can be used to see inside the human body?
A
B
C
D
74 answers
A
B
C
D
is the answer A?
I don't see any images. I recopied all of this since you didn't number them.
2. Which of the following correctly describes a radio wave?
A long wavelength and high frequency
B long wavelength and low frequency
C short wavelength and low frequency
D short wavelength and high frequency
is the answer B?
B is correct but so is D. I have operated radios on 180 m(long wavelength) and about 1700 kHz AS WELL AS 2 m (short wavelength) and 144 mHz (high frequency).
3. When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is
A absorbed
B reflected
C refracted
D transmitted
is the answer A?
yes
4. On the light wave above, the property indicated by the arrow determines which characteristic of light?
A brightness
B speed
C reflection
D energy
I don't see an arrow.
5. How are sonar and ultrasound imaging technologies different?
A They use different types of sound waves
B They use sound to see places that otherwise cannot be seen
C They are used for different purposes
D They are used to examine things
6. Certain seismic waves travel as
A electromagnetic and transverse waves
B visible light and longitudinal waves
C longitudinal and transverse waves
D compression and visible light waves
7. What do some bats use to locate food and to navigate?
A seismic waves
B echolocation
C radio waves
D ultraviolet light
8. A broadcasting station sends information to your radio or television with
A microwaves
B ultrasound waves
C mechanical waves
D radio waves
9. Light waves strike a lamp shade. What property of light is demostrated?
A diffuse reflection
B diffraction
C refraction
D regular reflection
10. The curies discovered which two elements?
A radium and polonium
B cesium and thorium
C mercury and hydrogen
D cadmium and francium
11. Why does the wave of light bend toward the normal as it enter water?
A Water has a lower index of refraction than air, so the wave slows down
B Water has a lower index of refraction than air, so the wave speeds up
C Water has a higher index of refraction than air, so the wave speeds up
D Water has higher index of refraction than air, so the wave slows down
12. AM signals travel as changes in
A the speed of the wave
B the amplitude of the wave
C the frequency of the wave
D the loudness of the wave
13. Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously?
A fluorescence
B rarefaction
C radioactivity
D electromagnetic
14. Which letter shows the type of wave that can be used to see inside the human body?
A
B
C
D
Have
Got
To
Be
Joking
Jenny.
Anyways......Anyone got the answers!?
D
B
A
A
C
C
D
A
D
C
D
D
B
A
A
C
C
B
D
A
A
D
B
C
D
You will get 14/14 100% Correct for using this.
14/14 on practice thx Morgan your great
D,B,A,C,C,B,B,D,A,A,D,B,C,D.
2. B
3. A
4. A
5. C
6. C
7. B
8. D
9. A
10. A
11. D
12. B
13. C
14. D
These are @Morgan's answers but they are numbered...They are 100% ;)
I'm just like DeRozan, if I shoot it, it goes in
I am in Cali just coastin', get 'em so wet they need coasters
I got a selfie with Oprah, I just ain't ever post it
And I'm in my happy place posted, I ain't frown since '06
it will just be a few moments.....
Tripppyyyyy.
Also she right tho =)
Anyone else have this happen, if so, do you have an explanation lol.
#LifeSaver
#SpotifyHereICome!
2. B- long wavelengths and low frequency
3. A- absorbed
4. A- brightness
5. C- they are used for different purposes
6. C- longitude and transverse waves
7. B- echolocation
8. D- radio waves
9. A- diffuse reflection
10. A- radium and polonium
11. D- water has a higher index of refraction than air, so the wave slows down
12. B- the amplitude of the wave
13. C- radioactivity
14. D- D
jk
lol🤣🤣🤣🤣🤣
I got a 100% thx @morgan
:P
Thx.
>:D
Me: And I am.... (my name)
;D
Morgan: On your left.
Radium, in the form of radium chloride, was discovered by Marie and Pierre Curie in 1898 from ore mined at Jáchymov. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1911.[1]
In nature, radium is found in uranium and (to a lesser extent) thorium ores in trace amounts as small as a seventh of a gram per ton of uraninite. Radium is not necessary for living organisms, and adverse health effects are likely when it is incorporated into biochemical processes because of its radioactivity and chemical reactivity. Currently, other than its use in nuclear medicine, radium has no commercial applications; formerly, it was used as a radioactive source for radioluminescent devices and also in radioactive quackery for its supposed curative powers. Today, these former applications are no longer in vogue because radium's toxicity has become known, and less dangerous isotopes are used instead in radioluminescent devices.