True or False: The shape of Earth's magnetic field resembles that produced by a laboratory bar magnet.
Indicate whether this statement is true or false.
Question 2
Judge the following sentences according to the criteria given below. A student disputes the process of mantle convection. They argue that rock is solid and cannot flow.
They challenge their classmates to provide evidence for present day mantle convection. A classmate shows them a seismic tomographic map and cross section showing variations in S-wave velocities.
A) The seismic tomographic map and cross section do show evidence for present day mantle convection and offers a strong affirmation of mantle convection.
B) The seismic tomographic map and cross section do show evidence present day mantle convection but this data cannot be used as evidence for mantle convection.
C) The seismic tomographic map and cross section has a random pattern of S-wave velocities and offers no evidence for anything.
D) The seismic tomographic map and cross section shows evidence for mantle convection in the past but not for present day mantle convection.
Laboratory, Institute of Biochemistry, University of Cologne.
The Sun is the nearest star to Earth.
Magnetic resonance imaging (MRI) image demonstrating a back herniated disk.
Solar particles interact with Earth's magnetosphere. Sizes not to scale.
Earth’s Revolution and Rotation: The Causes of Earth’s Seasons
Short-wavelength flux is reflected by Earth