Satellites use ____ to calculate the depths of the ocean. a. ...

[sdfghj]

Satellites use ____ to calculate the depths of the ocean.
  a. variations in elevation of surface water
  b. multibeam echo sounding
  c. radiometrics
  d. variations in ocean density

Question 2

What is the flatness of abyssal plains associated with?
  a. The large amounts of sediment
  b. The depth of abyssal plains
  c. The pressure above the abyssal plains
  d. The lack of sediment

[macybarnes]

Answer to Question 1

ANS: A
Satellites use radar pulses every second to determine the elevation of surface water. The distance of the
ocean surface is measured. The variations in elevation correspond with the depth in the ocean. This
method is quite accurate. Information can be found in the section Ocean Floor Is Mapped by
Bathymetry

Answer to Question 2

ANS: A
There can be as much as 1000 kilometers of sediment layers on abyssal plains. Most of this sediment is
terrestrial in origins. Information can be found in the section The Topography of Deep-Ocean Basins
Differs from That of the Continental Margins.

[sdfghj]

Thanks

[macybarnes]

Welcome