Fri. Jan 10th, 2025

Climatic Change

  1. Which era is characterized by the emergence of the first complex life forms?

    Options:
    1. Mesozoic
    2. Paleozoic
    3. Pre-Paleozoic
    4. Cenozoic

    Option: B

  2. What is the basis of inferences regarding the climatic history of early pre-Palaeozoic era?

    Options:
    1. Geological evidence
    2. Numerical models
    3. Deductions based on lithological evolution
    4. All of the above

    Option: D

  3. How was the solid crust of the earth formed?

    Options:
    1. Due to the cooling and solidification of liquid materials
    2. Due to the formation of dense atmosphere surrounding the earth
    3. Due to the gradual but continued cooling and contraction of the earth
    4. Due to the precipitation process that resulted in the development of rivers and seas

    Option: A

  4. What was the earliest assumed climatic phase of the earth’s atmosphere like, and when did it occur?

    Options:
    1. Cold with an average atmospheric temperature of 25°C about 2500 MYBP
    2. Warm with an average atmospheric temperature of 37°C about 4250 MYBP
    3. Hot with an average atmospheric temperature of 45°C about 5500 MYBP
    4. Mild with an average atmospheric temperature of 20°C about 1800 MYBP

    Option: B

  5. What is the Huronian Glaciation, and when did it occur?

    Options:
    1. The first ice age that occurred about 2700 MYBP to 1800 MYBP
    2. The second ice age that occurred about 950 MYBP
    3. The third ice age that occurred about 700 MYBP
    4. The fourth ice age that occurred about 300 MYBP

    Option: A

  6. What kind of plant kingdom existed during the pre-Cambrian period?

    Options:
    1. Terrestrial plants only
    2. Marine grasses only
    3. Both terrestrial plants and marine grasses
    4. None of the above

    Option: B

  7. During which era did the Carboniferous Ice Age occur?

    Options:
    1. Mesozoic Era
    2. Cenozoic Era
    3. Paleozoic Era
    4. Precambrian Era

    Option: C

  8. What caused the extinction of numerous plant and animal species during the Carboniferous period?

    Options:
    1. Increasing seasonal variations in the climatic conditions
    2. Widespread glaciation
    3. Evolution of deciduous trees
    4. Expansion of grasslands

    Option: B

  9. What was the dominant vegetation in the northern hemisphere during the Triassic period?

    Options:
    1. Flowering plants
    2. Deciduous trees
    3. Coniferous trees and ferns
    4. Grasslands

    Option: C

  10. What type of vegetation was dominant during the Jurassic period?

    Options:
    1. Grasslands
    2. Deciduous forests
    3. Coniferous forests
    4. Swamps and meandering rivers

    Option: C

  11. What caused the growth of deciduous trees during the Cretaceous period?

    Options:
    1. Seasonal regime of climate
    2. Warming of high altitudes
    3. Subtropical climate
    4. Cooling of high latitudes

    Option: A

  12. What was the world’s climate during the greenhouse mode?

    Options:
    1. Predominantly cold
    2. Predominantly warm
    3. Polar ice caps existed
    4. Sea level was low

    Option: B

  13. During which period did the Earth witness the evolution of grass-eating mammals?

    Options:
    1. Eocene period
    2. Oligocene period
    3. Miocene period
    4. Pliocene period

    Option: B

  14. What type of climate characterized the early Tertiary?

    Options:
    1. Cold
    2. Warm
    3. Wet
    4. Dry

    Option: B

  15. What is the Pleistocene period known for?

    Options:
    1. Pronounced climatic changes
    2. Volcanic activity
    3. Human evolution
    4. Formation of mountains

    Option: A

  16. What are some techniques used to derive authentic data on the Pleistocene period?

    Options:
    1. Fossil analysis, seismic surveying, magnetic imaging
    2. Pollen analysis, isotope analysis, carbon dating, potassium argon dating
    3. Satellite imaging, spectroscopy, chromatography
    4. None of the above

    Option: B

  17. How many glacial and interglacial periods comprised the Pleistocene Ice Age?

    Options:
    1. 2 glacial and 2 interglacial periods
    2. 3 glacial and 3 interglacial periods
    3. 4 glacial and 4 interglacial periods
    4. 5 glacial and 5 interglacial periods

    Option: C

  18. What are the names of the four glacial periods in North America during the Pleistocene Ice Age?

    Options:
    1. Nebraskan, Kansan, Illinoin, Wisconsin
    2. Nebraskan, Kansan, Illinoin, Rocky
    3. Hudson, Cordillarean, Labrador, Keewatin
    4. Aftonian, Yarmouth, Sangamon, Holocene

    Option: A

  19. What are interglacial periods?

    Options:
    1. Periods of cooling and glaciation
    2. Periods of warmer temperatures between glacial periods
    3. Periods of volcanic activity
    4. None of the above

    Option: B

  20. Which ice sheets advanced during the Pleistocene Ice Age?

    Options:
    1. Atlantic, Pacific, Indian
    2. Labrador, Hudson Bay, Cordillarean
    3. Arctic, Antarctic, Greenland
    4. None of the above

    Option: B