2nd Marking Period Blog Project

13-3

Ttitle: The Theory Of Seafloor Spreading

Heading: New Technology and Seafloor Knowledge

Introduction: 

• How did invention of Sonar contrbute to information about the ocean bottom? It allows you to "see" through long distance underwater.
• What are mid-ocean ridges, rift valleys, and trenches? The portion running through the middle of Atlantic Ridge. This was one of the frist mid-ocean ridges discovered. Scienttisrs also discovered trenches, which are deep ravines in the seafloor and rift vallage, which are deep valleys running through the center of the Mid-Alantic Ridge and other mid-ocean ridges. They began to notices patterns in the mid-ocean ridges, trenches, and rift valleys the proved pivotal in developing new theories.

Every 1st sentence: At about the same timeWegener proposed his theory of continental drift and partly in response to Titanic disaster, a new technology was bornthe would change what we know about the seafloor


Visual and Vocabulary:

Ring of Fire

this is the major earthquake and volcano zone the extends around the edge.

(This is the major earthquake and volcano zone that extends around the edge of the pacfic ocean)

End of Reading:

True or False

1.Scientist cant recognized that they could map the ocean with a Sonar

.

.

.

.

FALSE

2.They began to notice patterns in the mid-ocean redges trenchs, and rift valleys that proved pivotal in developing new theories

.

.

.

.

TRUE

Multiple Choice

1.What is the major earthquake and volcano zone that extends around the edge of the pacfic?

a.ring of water

b.ring of fish

c.ring of fire

d.lord of the rings :)

2.What did Scientists discovered about the Ridges?

a.apples,bannanas,grapes

b.money in the bank

c.people

d.mid-ocean ridges, trenches, rift valley

Fill in the blank

1.Trenches are found around most of the _______

.

.

.

.

Pacfic Ocean

2.The frist seafloor map was made during the ________ expedition

.

.

.

.

Meteor

Summary: Scientics found a