14.1 Earth’s Undersea World

Last updated almost 3 years ago
6 questions
As read Chapter 9, “Earth’s Undersea World,” answer the following questions.
1

Seafloor spreading explains which of the following?

1

Which phrase describes the Mid-Atlantic Ridge?

9

Part A: Drag each animal to the seafloor feature it lives around.

  • sponges
  • giant tube worms
  • anemones
  • white crabs
  • schools of fish
  • deep-sea corals
  • brittle stars
  • football-sized clams
  • pale, blind shrimp
  • Hydrothermal Vents (4)
  • Seamounts (5)
2

Part B: Why might these animals live near these particular seafloor features?

6

Match each cause (left side) to each effect (right side)

Draggable itemCorresponding Item
Seafloor spreading
islands are formed
Tectonic plates move apart very slowly
a trench is formed
Tectonic plates collide
seafloor spreading
One tectonic plate slides under another
continental drift
Water seeps into the earth’s crust and is heated by magma
hydrothermal vents are formed
Seamount emerges from the ocean’s surface
mountains are formed
2

On page 84, the author uses a simile when describing the mountain chain formed by mid-ocean ridges, saying it is like the stitching on a baseball.

Explain what this simile means.