Mountain Environments 1 An Introduction 4.0 / 5 based on 1 rating ? GeologyAll LevelsAll boards Created by: HeatherCreated on: 08-01-12 17:21 What is the return period or recurrence interval? the frequency of an event of a given magnitude. 1 of 30 what is the equatorial radius of the Earth? 6400 km 2 of 30 What is the circumference of the Earth? 40,000 km 3 of 30 How old is the Earth? 4.5 ba 4 of 30 How old are the oldest known rocks and fossils? 3.8 ba 5 of 30 How much iron is in the Earth's composition? 34.6 % 6 of 30 How much oxygen is there in the Earth's composition? 29.5 % 7 of 30 How much magnesium is there in the Earth's composition? 12.7 % 8 of 30 How much nitrogen is there in the atmosphere? 77 % 9 of 30 How much oxygen is there in the Earth's atmosphere? 21 % 10 of 30 What is the Earth's surface area of ocean? 71 % 11 of 30 What is the Earth's surface area of land? 29 % 12 of 30 What is the mean surface temp on Earth? + 14 degrees celsius 13 of 30 Without greenhouse gases surface temperature on Earth would be? -21 degrees celsius 14 of 30 Land surface elevation varies between how much? -12 km to +9 km 15 of 30 What does hypsometry mean? The different distribution of different elevations on Earth. 16 of 30 At what height are the two biomodal peaks of the Earth's hypsometry? -4 km and +1 km 17 of 30 What elevation does continental surface range between? +8.8 km and -0.2 km 18 of 30 What does the ocean base range between? -0.2 km to 11 km 19 of 30 What is the mean of the ocean base ranges? -3.7 km 20 of 30 How old is continental crust? 3800 Ma 21 of 30 How thick is continental crust? 30-40 km 22 of 30 How dense is continental crust? Low density 23 of 30 How old is oceanic crust? ~200 Ma 24 of 30 how thick is oceanic crust? 6-11km 25 of 30 What do crustal plates float on? Athenosphere 26 of 30 How are crustal plates driven? convection 27 of 30 An example of a divergent plate boundary is? The African Rift Valley 28 of 30 Give an example of a transform boundary? San Andreas Fault 29 of 30 Give an example of a convergent plate boundary? Himalyayas 30 of 30
Comments
No comments have yet been made