Earth Science Olympiad - Previous Questions 9

Earth Science Olympiad - Previous Questions 9 1. The partial pressure of water vapour is 10 mbar and the temperature is 20C (saturated vapour pressure of water is 25 mbar), what is the relative humidity? 100% 50% 40% 20% 2. If the observed temperature cools 15K between...

Earth Science Olympiad - Previous Questions 8

Earth Science Olympiad - Previous Questions 8 1. When the scale height of a minor constituent (e.g., ozone, etc.) is equal to the atmospheric scale height then the constituent is not well mixed and its mixing ratio is constant with altitude the constituent is well mixed and...

Earth Science Olympiad - Previous Questions 7

Earth Science Olympiad - Previous Questions 7 1. Which of the following minerals is most suited for U-Pb dating? Quartz Feldspar Zircon Topaz 2. Which of the following minerals is a major constituent of marble? Serpentine quartz feldspar calcite 3. Which of the following...

Earth Science Olympiad - Previous Questions 6

Earth Science Olympiad - Previous Questions 6 1. It is observed in the field that a limestone is intruded by a dolerite dyke. A volcanic flow overlies the limestone. Which of the following statements is more likely to be true? Limestone is chemically precipitated simultaneous...

Earth Science Olympiad - Previous Questions 5

Earth Science Olympiad - Previous Questions 5 1. Earth’s biosphere is protected from cosmic ray bombardment from outer space because it has ozone layer in the atmosphere greenhouse gases thick atmosphere magnetic field 2. During the glacial times, the average salinity of the ocean increased relative to the interglacial stage decreased relative to the interglacial stage did...

Earth Science Olympiad - Previous Questions 4

Earth Science Olympiad - Previous Questions 4 1. Which of the followings is not a stable isotope: 12C 13C 14C 15N 2. Smaller phytoplankton has advantage over bigger phytoplankton in oligotrophic (less nutrient) waters, because: Surface area of smaller phytoplankton is less...

Earth Science Olympiad - Previous Questions 3

Earth Science Olympiad - Previous Questions 3 1. Arrange the following in increasing order of grain size a. Sand b. Boulder c. Pebble d. Silt a,c,d,b b,c,a,d d,a,c,b d,a,b,c 2. Which of the following sedimentary structure can be used as Plaeocurrent direction indicator Rainprints Mud...

Earth Science Olympiad - Previous Questions 2

Earth Science Olympiad - Previous Questions 2 1. Chemical weathering of rocks will produce Granite Limestone Bauxite Sandstone 2. Most appropriate example of Geomagnetic reversal is imprinted on the Rift basins Orogenic belts MORs Trenches 3. In case of a structural...

Earth Science Olympiad - Previous Questions 1

Earth Science Olympiad - Previous Questions 1 The questions are from the previous year International Earth Science Olympiad question papers with solutions and explanations.  1. Rift basin is formed by which of the following crustal processes Compression Extension Both...