Climatic Change

Options:

1. 10,000 and 20,000 years
2. 23,000 and 19,000 years
3. 5,000 and 15,000 years
4. 30,000 and 25,000 years

Correct Answer

Options:

1. Soft sediments deposited by rivers
2. Volcanic rocks formed by lava flows
3. Hardened surfaces of different types such as laterites, silcretes, calcretes, alcretes, ferricretes, et
4. Deep sea sediments formed by the accumulation of shells

Correct Answer

Options:

1. Deviation from true circular path
2. Time of year when the earth is at perihelion
3. Angle of the earth’s rotational axis
4. Alternating sequence of layers of fine silts and clays

Correct Answer

Options:

1. Sediments deposited by glaciers
2. ediments deposited by rivers
3. Sediments deposited by wind
4. Deposits represented by salt deposits in warm and arid climatic conditions when evaporation exceeds precipitation

Correct Answer

Options:

1. The study of plant pollen
2. The study of ocean currents
3. The study of glaciers and glaciation
4. The study of earthquakes

Correct Answer

Options:

1. Cooling of the earth’s surface due to the reflection of sunlight by clouds
2. Progressive warming-up of the earth’s surface due to the blanketing effect of carbon dioxide in the atmosphere
3. Cooling of the earth’s surface due to the reflection of sunlight by the polar ice caps
4. Warming of the earth’s surface due to increased solar radiation

Correct Answer

Options:

1. Increase in the earth’s temperature by the absorption of outgoing terrestrial infrared radiation by certain gases, mainly carbon dioxide
2. Decrease in the earth’s temperature leading to the beginning of a glacial period
3. Increase in the earth’s temperature due to increased solar radiation
4. Period of minimum sunspot activity

Correct Answer

Options:

1. Increase in the earth’s temperature by the absorption of outgoing terrestrial infrared radiation by certain gases, mainly carbon dioxide
2. Decrease in the earth’s temperature leading to the beginning of a glacial period
3. Increase in the earth’s temperature due to increased solar radiation
4. Period of minimum sunspot activity

Correct Answer

Options:

1. The prolonged period of maximum sunspot activity
2. The prolonged period of minimum sunspot activity
3. The period of maximum glaciation
4. The period of minimum glaciation

Correct Answer