Science Help Plzz

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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

  • Science Help Plzz -

    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?
    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

  • Science Help Plzz -

    do you have the answers Diana?

  • Science Help Plzz -

    I NEED NUMBER 8 NOW OR I CANT PLAY WITH CUTE FERRETS!!!!!!!!!

  • Science Help Plzz -

    IMBASAL

  • Science Help Plzz -

    Call me!!

  • Science Help Plzz -

    You
    Have
    Got
    To
    Be
    Joking
    Jenny.

    Anyways......Anyone got the answers!?

  • Science Help Plzz -

    try this
    D
    B
    A
    A
    C
    C
    D
    A
    D
    C
    D

  • Science Help Plzz -

    These are the rights seers for the connexus people
    D
    B
    A
    A
    C
    C
    B
    D
    A
    A
    D
    B
    C
    D

  • Science Help Plzz -

    Morgan is right.

  • Science Help Plzz -

    Morgan is right! 100% ! Thanks!

  • Science Help Plzz -

    Morgan is right i got a 100!!!!! Yasssss now i can play with my bf

  • Science Help Plzz -

    I got 14/14!!!!! 100% thanks Morgan!

  • Science Help Plzz -

    Thanks morgan :D

  • Science Help Plzz -

    Thx Morgan Ur awesome ∆

  • Science Help Plzz -

    thanks morgan I got 14/14 althou I only needed help with one question but ya thanks

  • Science Help Plzz -

    Using Morgan's answers I got 12/14 I didn't go back over and look at the wrong ones but I got an 85.9% which is good enough for me

  • Science Help Plzz -

    I got the same score as yes but I made a mistake while answering so maybe that was his/her problem as well. morgan is 100%

  • Science Help Plzz -

    Morgan is right

  • Science Help Plzz -

    Thank Morgan! :3.

  • Science Help Plzz -

    Thanks morgan!!

  • Science Help Plzz -

    Morgan is 100% Correct

    You will get 14/14 100% Correct for using this.

  • Science Help Plzz -

    Morgan is right i got a 100%

  • Science Help Plzz -

    correct sir

  • Science Help Plzz -

    Thank you Morgan! You Rock! ;3

  • Science Help Plzz -

    Yes, 14/14 on practice. Thank you Morgan.

  • Science Help Plzz -

    Morgan is correct

    14/14 on practice thx Morgan your great

  • Science Help Plzz -

    Morgan is correct thank you!!!

  • Science Help Plzz -

    Thanks!! This really Helped a lot Morgan is correct!

  • Science Help Plzz -

    Well shes not 100% but at least she was right. Now if you want a 100% here are the two corrected answers.
    D,B,A,C,C,B,B,D,A,A,D,B,C,D.

  • Science Help Plzz -

    Morgan is 100% correct, thank you!

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