Download CK-12 Earth Science (2009) (Flexbook) by : Craig Freudenrich, John Benner, David Bethel, Dana PDF

By : Craig Freudenrich, John Benner, David Bethel, Dana Desonie, Corliss Karasov, Mary Lusk, Erik Ong, Kurt Rosenkrantz, Julie Sandee

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Intermediate) 3. Explain how new ocean floor is created and also how ocean crust is destroyed. Why are the ocean basins younger than the continents? (Challenging) 4. Why do nautical charts have two compass roses on them (Intermediate) 5. What landforms are the highest on the continents? (Beginning) 6. Explain what landforms on the continents are created by erosion from wind and water. How does erosion create a landform? (Intermediate) 7. What is topography? edu/earth-science/tutor/landform_identification.

Look at this view of the Swamp Canyon Trail in Bryce Canyon National Park, Utah (Figure 1). You can see the rugged canyon walls and valley below. The terrain clearly has many steep cliffs. There are high and low points between the cliffs. 39 Figure 1: View of Swamp Canyon in Bryce Canyon National Park, looking southeast from Swamp Canyon Trail overlook. htm, Courtesy: US NPS, License: Public Domain) Now look at the corresponding section of the Visitor’s map (Figure 2). You can see a green line which is the main road.

42 Figure 4: Portion of a USGS topographic map of Stowe, VT. In this map, you can see how the spacings of the contour lines indicate a steep hill just to the right of the city of Stowe in the right half. The hill becomes less steep as you proceed right. png, Courtesy: USGS, License: Public Domain) 2. Concentric circles indicate a hill. Figure 5 shows another side of the topographic map of Stowe, Vermont. When contour lines form closed loops all together in the same area, this is a hill. The smallest loops are the higher elevations and the larger loops are downhill.

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