For what reasons do we consider the planets of the solar system to be of two fundamentally different types?
What will be an ideal response?
The jovian planets are made up mainly of the light elements, hydrogen and helium, while the terrestrial planets are made up mostly of heavier elements. The jovian planets are much larger, with faster rotations, and more moons than the terrestrial planets. These differences and others have led to a division of the planets into two main types.
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How did the natural satellites in the Solar System form?
A. The moons formed by the accretion of debris from massive collisions. B. The moons probably formed from planetesimals orbiting the growing planets. C. The moons likely were "captured" as they wandered too close to the planets. D. All of these choices are correct.
The ____________ planets have larger radii than the ____________ planets
Fill in the blank(s) with correct word
O-type stars
A) have lifetimes long enough for advanced life to evolve B) have lifetimes long enough for planets to form and for life to appear, but not long enough for advanced life C) do not contain enough heavy elements to form planets D) have lifetimes too short for planet formation
What is the reason cities buy water rights from farmers? Is this a good or a poor way to address the problems?
What will be an ideal response?