What is the primary source of erosion on the Moon? Why does change there take so long?
What will be an ideal response?
A constant fall of meteoroids from space pelts the Moon, pulverizing the surface with tiny craters. But really big impacts are rare, and these microscopic changes take a long time to show up as seen from Earth. Our erosive agents like wind, water, and ice can make much more dramatic changes in short periods of time, such as floods, sandstorms, glaciers, etc.
You might also like to view...
The Greenland ice sheet can be one km thick. Estimate the pressure underneath the ice. (The density of ice is 918 kg/m3.)
a. 9.0 × 10^5 Pa (9 atm)
b. 2.5 × 10^6 Pa (25 atm)
c. 4.5 × 10^6 Pa (45 atm)
d. 9.0 × 10^6 Pa (90 atm)
A student is sitting on the right side of a school bus when it makes a right turn. We know that the force of gravity acts downwards and a normal force from the seat acts upwards. If the student stays in place when the bus turns, we also know that there must be
a. no other force on the student. b. a force parallel to the seat directed forward on the student. c. a force parallel to the seat directed to the left on the student. d. a force parallel to the seat directed to the right on the student. e. a force parallel to the seat in a direction between forward and left on the student.
Calculate
(a) Calculate the shortest wavelength EMR that has high tansmission through CdS. The energy gap in CdS is 2.25 eV. (b) Is a photon with energy 2.26 eV transmitted or absorbed? (c) Is a photon of energy 2.24 eV transmitted or absorbed?
Most Greek philosophers believed in a(n) _______________ Universe
Fill in the blank(s) with correct word