1 / 9

Warm Up Questions

Warm Up Questions. Do you know the terms biotic and abiotic? If not, look them up & be ready to tell me the difference! Why/how does it take energy to get energy?. Chapter 15 Notes. 4-29-14. Major points from section 1. Oceanography – study of Earth’s oceans

walda
Download Presentation

Warm Up Questions

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 Questions • Do you know the terms biotic and abiotic? If not, look them up & be ready to tell me the difference! • Why/how does it take energy to get energy?

  2. Chapter 15 Notes 4-29-14

  3. Major points from section 1 • Oceanography – study of Earth’s oceans • Satellites, sonar, etc. used to explore the ocean • Scientists hypothesize water may have come from impacting comets or deep within Earth’s interior( & released by volcanoes) • Major Oceans: Pacific, Atlantic, Indian, Arctic, & Antarctic

  4. Oceans Information • 1. Pacific – largest, deepest • 2. Atlantic – second largest • 3. Indian – third largest • Arctic (north) & Antarctic (south) – have lots of sea ice

  5. Chapter 15, Section 2

  6. Chemical Properties of Seawater • Seawater contains 3.5% dissolved salts (mostly NaCl) • Salinity – measure of salt content or amount of dissolved salts • Stays constant because salts are removed and added at a consistent rate (removed by: formation of evaporites & biological processes & replenished by: volcanic eruptions, and weathering & erosion)

  7. Physical Properties of Seawater • Denser than freshwater due to dissolved ions • Also, colder water is more dense so the bottom of the ocean has colder water • Remember D = m/v • Blue light penetrates farthest in the water and red light penetrates least deep (see pg. 396) • Freezing point of salt water lower than freshwater due to dissolved ions

  8. Ocean Layering • Surface layer – warmest • Thermocline – transitional layer • Bottom layer – coldest

  9. REMINDER • Chapter 15, section 3 information was presented by me writing on the SMART board and by videos….you are responsible for getting caught up if you were absent!

More Related