13. Isotopes of a particular element in the periodic table havewhich nuclear pro
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Question
13. Isotopes of a particular element in the periodic table havewhich nuclear property in common?Athe same number ofneutrons but different numbers of protons in the nucleus.
Bthe same number ofprotons but different numbers of neutrons in the nucleus.
Cthe same total number ofprotons and neutrons in the nucleus.
Dthe same number ofneutrons, but different numbers of protons and electrons in thenucleus. 14. The temperature of the Sun's photosphere is
A5800 K.
Babout 10,000 K.
C4300 K
Dclose to 1 millionK. 15. Granulation on the surface of the Sun is caused by
Amagnetic fielddisturbances above the solar surface.
Bconvective currentscarrying heat from beneath the surface.
Cnuclear fusion processesoccurring just below the surface.
Ddifferential rotation ofthe Sun. 16. The neutral hydrogen atom consists of
Aone proton and oneneutron.
Bone proton.
Cone proton, one neutron,and one electron.
Done proton and oneelectron.
Ean isotope and anion. 17. An atom can be excited to a higher level
Aby emitting aphoton.
Bby colliding with anotheratom or electron.
Cby absorbing aphoton.
DA and B.
EB and C. 18. The lowest energy level in an atom is called
Athe groundstate.
Bthe ionizedstate.
Cthe excitedstate.
Dabsolute zero. 19. The longer the wavelength of the peak of emitted radiation froma blackbody,
Athe higher thetemperature.
Bthe lower thetemperature.
Cthe more visible light itemits.
Dthe faster the blackbodymelts. 20. A perfect blackbody absorbs only infrared and ultravioletradiation
ATrue
BFalse 21. If you know the peak color of a star, you can findits
Atemperature
Bmass
Cradius
Dage 22. The chemical element that a particular nucleus represents isdetermined by the number of
Aneutrons
Bprotons
Celectrons
Dphotons 23. Red stars are hotter than Blue stars.
ATrue
BFalse 24. Consider two stars of the same size. Star A is two times hotterthan star B. This means that star A is
Atwice as luminous asstar B.
Bfour times as luminous asstar B.
Ceight times as luminousas star B.
Dsixteen times as luminousas star B.
Eequal in luminosity tostar B. 25. Star A is two times hotter than star B. This means that starA's blackbody spectrum peaks at
Ahalf the wavelengthas B.
Bthe same wavelength asB.
Ctwice the wavelength asB.
Dthree times thewavelength as B.
Eone third of thewavelength as B.
Explanation / Answer
. Isotopes of a particular element in the periodic table have whichnuclear property in common? Athe same number ofneutrons but different numbers of protons in the nucleus. Bthe same number ofprotons but different numbers of neutrons in the nucleus. [True ] Cthe same total number ofprotons and neutrons in the nucleus. Dthe same number ofneutrons, but different numbers of protons and electrons in thenucleus. 14. The temperature of the Sun's photosphere is A5800 K. [ true] Babout 10,000 K. C4300 K Dclose to 1 millionK. 15. Granulation on the surface of the Sun is caused by Amagnetic fielddisturbances above the solar surface. Bconvective currentscarrying heat from beneath the surface. Cnuclear fusion processesoccurring just below the surface. Ddifferential rotation ofthe Sun. 16. The neutral hydrogen atom consists of Aone proton and oneneutron. Bone proton. Cone proton, one neutron,and one electron. Done proton and oneelectron. [ True ] Ean isotope and anion. 17. An atom can be excited to a higher level Aby emitting aphoton. Bby colliding with anotheratom or electron. Cby absorbing aphoton. DA and B. EB and C. [True ] 18. The lowest energy level in an atom is called Athe groundstate. [ True ] Bthe ionizedstate. Cthe excitedstate. Dabsolute zero. 19. The longer the wavelength of the peak of emitted radiation froma blackbody, Athe higher thetemperature. Bthe lower thetemperature. [ True ] Cthe more visible light itemits. Dthe faster the blackbodymelts. 20. A perfect blackbody absorbs only infrared and ultravioletradiation ATrue BFalse [ correct ] 21. If you know the peak color of a star, you can findits Atemperature [ True ] Bmass Cradius Dage 22. The chemical element that a particular nucleus represents isdetermined by the number of Aneutrons Bprotons [True ] Celectrons Dphotons 23. Red stars are hotter than Blue stars. ATrue BFalse [correct ]
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