Alfred Wegener is well known for hypothesizing that:
a. Earth's surface is broken into several major lithospheric plates.
b. new oceanic crust is formed at subduction zones.
c. the magnetic poles have reversed on occasion during geologic time.
d. over time, the continents change their geographic position.
e. the inner core is molten.
Question 2
Metamorphic rocks:
a. form when molted rock comes in contact with the atmosphere.
b. often form depositional layers called bedding planes.
c. are usually softer and less resistant to weathering than other rocks.
d. can be metamorphosed.
e. include the rocks obsidian and conglomerate.
The Sun as it appears from the surface of the Earth at Sunset.
Surface Features on Europa
Mucosal surface of the small intestine.
Planet Earth compared to all its water and air!
Escape Speed from Earth
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...