Describe the four stages in the development of a terrestrial planet

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(1) Differentiation, the separation of material into layers according to density. (2) Cratering, meteorite impacts, which can't occur until a solid surface forms. (3) Flooding, molten rock or water flowing over the surface. (4) Slow surface evolution, which includes erosion and plate tectonics.

Physics & Space Science

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Discuss the evidence we have that the surface of Venus is marked by volcanism

What will be an ideal response?

Physics & Space Science

The mass of a single galaxy might be found by

a. the double galaxy method. b. the rotation curve method. c. the cluster method. d. any of these methods. e. none of these methods.

Physics & Space Science

Power: When 5.00 A is flowing through an 10.0-? device, how much power is being dissipated in the device?

A. 50.0 W B. 250 W C. 500 W D. 2.50 kW

Physics & Space Science

An electron is fired through a pair of deflection plates, which produce a 2.00 cm long region with an electric field of 4000 N/C perpendicular to the electron's initial velocity. If the initial speed of the electron is how long does it take to traverse the plates?

A. 2.00 ?s B. 2.00 ns C. 1.70 ns D. 1.80 ns E. 1.50 ?s

Physics & Space Science