2Warm upDo you think new mountains are being formed on Earth today? How do you know?
3Volunteers?Yes, mountains are being slowly formed at plate boundaries across the EarthOur mission this week is to learn about tectonic plates and their movements which creates volcanoes, earthquakes and mountain building processes across the Earth’s surface
4AnnouncementsScience Fair Project PLAN is due TODAY, MONDAY, DEC 16TH!!!Place in the plastic crate on your way out of class today
5AnnouncementsUnit tests have been graded, BUT I still have students who were absent needing to take the test!Tracking on Wednesday!
6AnnouncementsLooking ahead….Finish Layers of the Earth Unit todayBegin Plate Tectonics Unit todayQuiz (20 questions)on both units Thursday!
7AnnouncementsScience Fair BACKGROUND RESEARCH is due FRIDAY, DEC 20TH!!!
10Question….What are the two types of crust found on the Earth?
11Remember….. Oceanic Crusts: (basalt) 5-10 kilometers thick, found under the oceans, thinner but more denseContinental Crust: (granite)35-70 kilometers thick, found under the continents, thicker but less dense
12Homework Worksheet on Layers of the Earth Glue, staple, or tape into your notebook and add the entry into your table of contentsI will be checking for this on Thursday during your notebook check!
13Interactive Notebook Q2 Add entry to Table of Contents6.E.2.2 Plate TectonicsAssign the next number
14Interactive Notebook Q2 Label Next Available Page:6.E.2.2 Plate TectonicsNumber page to match Table of Contents entryCircle the number
15Write in NotebookThe Earth’s crust is divided into 12 major tectonic platesThese plates sit on the dense, hot, layer of the earth known as the lithosphereLithosphere = the crust and upper portion of the mantle
16Write in notebookThe Earth’s plates move about 2 inches per year (5 centimeters)Convective currents within the mantle cause the plates to moveAs they move, the plates:Press against one another (convergent boundary)Pull apart from one another (divergent boundary)Scrape against one another (transform boundary)
20Write in notebookMajor geological events occur at these plate boundaries:EarthquakesVolcanic EruptionsMountain Building
21Write in notebook New mountain ranges are being formed where two continental plates press against one anotherAn oceanic plate and a continental plate press against one another
22Write in notebookThin oceanic plates spread outward at areas known as mid-ocean rift zones.
23Write in notebookScientists who study how wave energy travels through the different layers of the Earth are called Seismologists.
24Remember…. Waves have characteristics such as: the number of waves that pass a given point in 1 secondFrequency (speed of the wave)the height from the rest position to the bottom of the trough or from the rest position to the top of the crestAmplitudeDistance from crest to crest or trough to troughWavelength
26Write in notebook….During an earthquake, energy is released into the Earth as:-Primary waves (compression waves)-Secondary waves (shear waves)-Surface waves
27Write in notebookPrimary (P) waves travel through both solid rock (granite mountains) and liquid regions (volcanic magma or water of the oceans) on the EarthThese waves are like sound waves (compression waves)Travel the fastest
28Write in notebook Secondary (S) waves only travel through rock Move twice as slow as P wavesMoves at right angles to the direction of travel (transverse waves)
29Write in notebook Surface wave Motion is felt along the ground and Earth’s surface.Appear like waves or ripples of water that travel across a lake