Rift Valleys
Oceanic Ridges
Guide Questions:
1. What are common in the two pictures?
The formation of rifts valleys and oceonic ridges are indications
that the coust is spreading or splitting upart.
2. Million years ago, the land masses in each picture were once connected. What do you think is happening to the Earth's crust in those pictures?
3. If this event continues for millions of years, what do you think will be the effect on the crust?
4. Complete the drawing below to illustrate your answer in question no. 3? (after millinn vears aon)
RIFTY II.I.EY