1 / 9

Warm-up Week 15 Day 1

Warm-up Week 15 Day 1. It is generally true that igneous rocks are _______. a. made of silicate minerals. c. easily scratched b. normally contain fossils. d. contain primarily evaporites. Which factors help determine whether a volcanic eruption will be violent or gentle ?

sophie
Télécharger la présentation

Warm-up Week 15 Day 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Warm-up Week 15 Day 1 • It is generally true that igneous rocks are _______. • a. made of silicate minerals. c. easily scratched • b. normally contain fossils. d. contain primarily evaporites. • Which factors help determine whether a volcanic eruption will be violent or gentle? • a. composition of the magma • b. amount of dissolved gases in the magma • c. temperature of the magma • d. composition of magma, temperature, and gas pressure. • Most intraplatevolcanic activity occurs where ___. • a. hot magma descends into the mantle at a plate boundary • b. oceanic plates diverge • c. oceanic and continental plates converge • d. hot mantle plumes rise toward the surface within a plate

  2. “Orogenesis” “Oro” = mountain “Genesis” = beginning Mountain Building! Chapter 11

  3. Q: How do mountains form? Plate movements push/pull rocks!

  4. Deformation • Forces! • Push or Pull • Change in shape or size. • Happens at plate boundaries

  5. Force & Stress • Stress = strength of push/pullat one area • ↑High stress  Deformation

  6. 3 Types of Stress • Tensional • Pulled apart • Compressional • Pushed together • Shear • Pulled or pushed at opposite edges

  7. Stress at Faults builds Mountains!

  8. 3 Fault Types • Strike-Slip Fault • Normal Fault • Tensional • Fault-block Mtns. • Horst ↑ • Graben ↓ • Thrust Fault • Compression • Folded Mtns.

  9. Review: Convergent Divergent Transverse • 3 plate boundaries • ___________ boundaries • ___________ boundaries • ___________ boundaries • Most mountains at _______________ boundaries. • 3 Convergent Boundaries • ________ - __________ • ________ - __________ • _________- __________ Convergent Volcanoes! Folded Mtns! Oceanic Oceanic Oceanic Continental Continental Continental

More Related