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
9 answers
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 100% ;)
P.S.~
Next time, mark YOUR answers and then people will tell you if they are correct or not. :-)