| A | B |
|---|
| 3 types of plate boundaries | conversent, divergent, transform |
| coriolis effect affect | cause the wind to move in different direction |
| what takes place at the mid-ocean ridge | new crust comes out |
| how fast does continental drift occur | 2 inches per year |
| how do auroras originate | from the solar wind hitting the van allen belts |
| what causes the sky to be blue | sun traveling through the nitrogen atmosphere |
| what wave reaches a seismograph first | P- wave... |
| descrebe how P wave moves | fastest |
| descrebe how S wave moves | slower |
| descrebe how L wave moves | slowest |
| how does the Ozone layer help life on earth | protects all living thing fron the harmful ultraviolet from the sun |
| main gases in the earth's atmosphere | nitrogen 78%-oxygen-21% and 1% of other gases |
| core of the earth is made of | SEIZMIC WAVES |
| volcanoes formed | convergent, subduction zone |
| what increases with depth in the earth | temperature and pressure |
| what 3 things causes tides | sun, moon, and earth |
