1. Evidence supports North America with Northwest Europe?
Africa with Antarctica?
South America with Africa?
Where Greenland once was?
Organic Geologic Evidence?

2. Lesson 6 Notes: How are Science and technology interrelated?

3. Lesson 6 132 AD - 1st Seismograph – China
Early 1800’s - several intensity scales were used and were arbitrarily based on observed destruction. Most used was Mercalli scale.
1935 – Richter scale is used.
Lesson 6

4. 1940’s –
Invention - WWII Sonar invented to map ocean floor.
Discovered - an under water mountain range – Mid-ocean Ridge
Question – What is it? Where did it come from? What is it made of ?

5. 1960’s - volcano plotting begins.
1968 – Invention - Glomar Challenger
Discovered igneous basalt not limestone
Discovered age of rock gets older as you move away from the ridge.
Question - Could the ridge be the sea floor cracking and spreading?

6. -
New Technology – ALVIN descends to and takes pictures of the mid ocean ridge.
Discovery – Pillow lava and extremophiles
Question – Can life live in other extremes?
What really would alien life most likely be?

7. Late 1960’s – Early 1970’s Volcano maps and Earthquake data compared .