Presentation is loading. Please wait.

Presentation is loading. Please wait.

Sea Floor Spreading Year 1 Science. Sea Floor Spreading  Harry Hess created the theory of sea-floor spreading  The theory states the following: -The.

Published byLisa Lee Modified over 8 years ago

Similar presentations

Presentation on theme: "Sea Floor Spreading Year 1 Science. Sea Floor Spreading  Harry Hess created the theory of sea-floor spreading  The theory states the following: -The."— Presentation transcript:

1 Sea Floor Spreading Year 1 Science

2 Sea Floor Spreading  Harry Hess created the theory of sea-floor spreading  The theory states the following: -The sea floor spreads apart along both sides of a mid- ocean ridge (under water mountain chain) as new crust rises up from the mantle. -The ocean floors carry the continents along with them. -This is an example of a divergent boundary.

3 Video- Sea Floor Spreading Intro to Sea-Floor Spreading

4 What evidence supports sea-floor spreading? 1)Drilling samples of rock showed that “old” rock was further from the ridge, while “young” rock was found closest to the ridge

5 Rock Samples Ocean Ridge Animation

6 What evidence supports sea-floor spreading? 2) Basalt, a form of molten rock with magnetic properties, would lie in a pattern showing the reversal of the Earth’s magnetic field

7 Magnetic Field Reversal Bill Nye- Magnetic Field Reversal Polarity Stripes- Animation

8 What evidence supports sea-floor spreading? 3) Pillow shaped rocks form after molten material is erupted and cools quickly (found near mid-ocean ridges)

Download ppt "Sea Floor Spreading Year 1 Science. Sea Floor Spreading  Harry Hess created the theory of sea-floor spreading  The theory states the following: -The."

Similar presentations

Sea-Floor Spreading.

Sea-Floor Spreading.
Sea Floor Spreading The Mid-ocean Ridge Vocabulary Sonar Sea-floor spreading Deep-ocean trench Subduction Mid-ocean ridge.

Sea Floor Spreading The Mid-ocean Ridge Vocabulary Sonar Sea-floor spreading Deep-ocean trench Subduction Mid-ocean ridge.
Mid-Ocean Ridges Mid-ocean ridges are an undersea mountain chain where new ocean floor is produced. In the mid-1900’s, scientists begin mapping the mid-

Mid-Ocean Ridges Mid-ocean ridges are an undersea mountain chain where new ocean floor is produced. In the mid-1900’s, scientists begin mapping the mid-
Check your notes for key ideas!

Check your notes for key ideas!
Sea Floor Spreading Chapter 4.4. What is the mid-ocean ridge? What do we use to map the mid-ocean ridge? The mid-ocean ridge is the longest chain of mountains.

Sea Floor Spreading Chapter 4.4. What is the mid-ocean ridge? What do we use to map the mid-ocean ridge? The mid-ocean ridge is the longest chain of mountains.
Sea-Floor Spreading. Was Wegener Right? Recently, new technology has given us new clues into drifting continents. Wegener’s theory of drifting continents.

Sea-Floor Spreading. Was Wegener Right? Recently, new technology has given us new clues into drifting continents. Wegener’s theory of drifting continents.
The Theory of Sea Floor Spreading Page 99. Sea Floor Spreading Harry Hess (1960) as the ocean floor spreads apart, new crust material rises from the mantle.

The Theory of Sea Floor Spreading Page 99. Sea Floor Spreading Harry Hess (1960) as the ocean floor spreads apart, new crust material rises from the mantle.
Sea Floor Spreading Chapter 4 Section 4 Standard S 6.1 Students know evidence from plate tectonics is derived from the fit of the continents and mid.

Sea Floor Spreading Chapter 4 Section 4 Standard S 6.1 Students know evidence from plate tectonics is derived from the fit of the continents and mid.
Sea-Floor Spreading Key Concepts

Sea-Floor Spreading Key Concepts
FQ: How could continents move apart? 1. Think, pair, share 2. Write your ideas in your scientist notebook.

FQ: How could continents move apart? 1. Think, pair, share 2. Write your ideas in your scientist notebook.
Plate Tectonics. Theory of Plate Tectonics Meaning – “plate structure” Developed – 1960’s Explains the movement of Earth’s plates, causes of volcanoes,

Plate Tectonics. Theory of Plate Tectonics Meaning – “plate structure” Developed – 1960’s Explains the movement of Earth’s plates, causes of volcanoes,
Sea-Floor Spreading. Introduction Tube Worms - live in the Pacific Ocean about one mile deep near the hydrothermal vents.

Sea-Floor Spreading. Introduction Tube Worms - live in the Pacific Ocean about one mile deep near the hydrothermal vents.
EQ: What is the process of sea-floor spreading?

EQ: What is the process of sea-floor spreading?
Chapter 1, Section 4 Pages 33-39

Chapter 1, Section 4 Pages 33-39
Plate Tectonics Seafloor Spreading. Plate Tectonics 4 – Name the four main layers of the earth from inside to outer most layer. 3 – Name the three physical.

Plate Tectonics Seafloor Spreading. Plate Tectonics 4 – Name the four main layers of the earth from inside to outer most layer. 3 – Name the three physical.
3.2 Sea-Floor Spreading. Convection Currents cause the sea floor to spread.

3.2 Sea-Floor Spreading. Convection Currents cause the sea floor to spread.
Sea-Floor Spreading.

Sea-Floor Spreading.
The Theory of Seafloor Spreading. Seafloor Bathymetry Creating Maps of the Ocean Floor Scientists were able to map the ocean floor using sonar, an Echo-

The Theory of Seafloor Spreading. Seafloor Bathymetry Creating Maps of the Ocean Floor Scientists were able to map the ocean floor using sonar, an Echo-
Sea-Floor Spreading. Tubeworms have no mouth, eyes, or stomach (gut). Their survival depends on a symbiotic relationship with the billions of bacteria.

Sea-Floor Spreading. Tubeworms have no mouth, eyes, or stomach ("gut"). Their survival depends on a symbiotic relationship with the billions of bacteria.
Sea-Floor Spreading. Who developed the theory of continental drift? A)Wegener B)Einstein C)Beethoven D)Alexander Graham Bell.

Sea-Floor Spreading. Who developed the theory of continental drift? A)Wegener B)Einstein C)Beethoven D)Alexander Graham Bell.

Similar presentations

Ads by Google