Outline a simple model of planet building
What will be an ideal response?
Planetary development in the solar nebula began with the formation of dust grains by condensation. A particle grows by condensation when it adds matter one atom or one molecule at a time, producing a larger body called a planetesimal that contains both rock and metal. A planet grows from accretion and collision of the uniform planetesimals, resulting planet is of homogenous composition. Heat from radioactive decay and planetesimal in-fall causes differentiation, resulting planet has a metal core and low-density crust.
You might also like to view...
Daytime low temperatures generally occur:
What will be an ideal response?
Imagine that, at a certain point in empty space, the curl of the magnetic field has a positive x component. What can we conclude from this information?
A. Ex must be positive at that point. B. Ex must be negative at that point. C. Ex must be zero at that point. D. Ex must be increasing with time at that point. E. Ex must be decreasing with time at that point. F. The magnetic field described is not physically possible. T. None of the above.
Suppose you lived on the Moon near the center of the face that we see from Earth. During the phase of new Moon, what phase would you see for Earth? Would it be day or night at your home?
What will be an ideal response?
Electromagnetic radiation of wavelength 3.5 meters is which type?
A) AM-radio B) microwaves C) FM-radio D) visible E) ultraviolet