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7.   Sound waves "can't" travel through      *A. *a liquid. *B. *an elastic material. *C. *a solid. *D. *a vacuum.  
Sound waves "can't" travel through: VACUUM.
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Asked 2/23/2015 11:50:17 AM
Updated 2/23/2015 12:23:06 PM
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Sound waves "can't" travel through: VACUUM.
Added 2/23/2015 12:23:06 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [2/23/2015 12:24:34 PM]
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14.   The _______ of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time.      *A. *amplitude *B. *compression *C. *intensity *D. *frequency
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Updated 2/23/2015 1:24:13 PM
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The INTENSITY of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time.
Added 2/23/2015 1:24:13 PM
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5.   Which one of the following environments will sound "not" travel through?      *A. *Gas *B. *Vacuum *C. *Liquid *D. *Solid  
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Updated 4/22/2015 3:22:38 AM
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Sound will "not" travel through a vacuum.
Added 4/22/2015 3:22:38 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [4/22/2015 3:31:09 AM]
2.   The entire region of Northern Africa and Southwest Asia has a climate generally described as *A. *Dry *B. *Cooler by water *C. *Snowfall does not occur *D. *Hot all day and night
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Updated 2/25/2015 5:57:19 AM
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The entire region of Northern Africa and Southwest Asia has a climate generally described as dry.
Added 2/25/2015 5:57:19 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [2/25/2015 6:07:07 AM]
10.   _______ says the universe began as a point and expanded.      *A. *Cosmology *B. *Hubble's law *C. *The Big Bang theory *D. *Evolution
Weegy: THE BIG BANG THEORY says the universe began as a point and expanded. User: 11.   The photosphere is the innermost layer of the Sun, and it's also the      *A. *invisible surface of the Sun. *B. *nickname for the outer atmosphere of Earth. *C. *visible surface of the Sun. *D. *atmospheric pressure of Jupiter.   Weegy: The photosphere is the innermost layer of the Sun, and it's also the visible surface of the Sun. User: 12.   Which variable stars have pulsation periods between 1.5 hours and 1.2 days?      *A. *Nebulas *B. *Cepheid variables *C. *RR Lyrae variables *D. *Protostars Weegy: The stars that have pulsation periods between 1.5 hours and 1.2 days are RR Lyrae variables. "Their period is shorter, typically less than one day, sometimes ranging down to seven hours." User: 13.   The dark, smooth surface areas of the Moon are known as      *A. *maria. *B. *highlands. *C. *rilles. *D. *craters. Weegy: The dark, smooth surface areas of the Moon are known as: MARIA. User: 14.   Edwin Hubble categorized galaxies according to their      *A. *food supplies. *B. *colors. *C. *shapes. *D. *inhabitants. Weegy: Edwin Hubble categorized galaxies according to their: SHAPES. User: 15.   The cloud of interstellar dust and gas that forms a star is known as a      *A. *protostar. *B. *red giant. *C. *nebula. *D. *white dwarf. Weegy: The cloud of interstellar dust and gas that forms a star is known as a: NEBULA. User: 16.   An explosion that destroys the outer portion of a star is known as a      *A. *protostar. *B. *supergiant. *C. *supernova. *D. *nebula. (More)
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Updated 2/11/2018 8:40:16 AM
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An explosion that destroys the outer portion of a star is known as a supernova.
Added 2/11/2018 3:04:04 AM
This answer has been confirmed as correct and helpful.
Confirmed by Janet17 [2/11/2018 8:40:18 AM], Rated good by Janet17
15.   Compared to yellow light, orange light has      *A. *a longer wavelength. *B. *the same frequency. *C. *a different polarization. *D. *a faster wave velocity.
Weegy: Compared to yellow light, orange light has: LONGER WAVELENGTH. User: 18.   The term "angle of deviation" is used in reference to      *A. *a lens. *B. *a prism. *C. *an analyzer. *D. *a polarizer. (More)
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Updated 2/26/2015 2:25:27 PM
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The term "angle of deviation" is used in reference to a prism.
Added 2/26/2015 2:25:27 PM
This answer has been confirmed as correct and helpful.
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