Spicules are:
A) atoms with the same number of protons but different number of neutrons.
B) rapidly moving atoms and ions that escape from the solar corona and blow outward through the Solar System.
C) chromosphere flashes that are viewed as thin pink lines above the photosphere.
D) flamelike jets of gas extending upward into the chromosphere and lasting 5 to 15 minutes.
D
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A(n) _______________is something that is held to be obviously true and needs no further examination
Fill in the blank(s) with correct word
Which of the following living organisms most resemble the common ancestor of all life according to genetic testing?
A) bacteria such as E. coli B) organisms living deep in the oceans around seafloor volcanic vents C) plankton that use sunlight as an energy source through photosynthesis D) viruses E) stromatolites
An isotope of the element Manganese (Mn) has an atomic number of 25 and a mass number of 55. Assuming the atom is neutral, this means it has
A) 55 protons, 55 electrons, and 25 neutrons B) 25 protons, 25 electrons, and 30 neutrons C) 25 protons, 30 electrons, and 25 neutrons D) 25 protons, 25 electrons, and 55 neutrons
An FM radio station broadcasts at 96.7 MHz. What is the wavelength associated with this broadcast?
A) 3.1 m B) 0.32 m C) 2.9 × 1014 m D) 2.9 × 1016 m E) not enough information given