1. Geologists are trained in reading the signs that signal an impending natural

Question

1. Geologists are trained in reading the signs that signal an impending natural disaster. a. True b. False

2. Lava flows are a type of: a. Internal process b. External process c. Monetary process d. Atmospheric process

3. Which of the layers below are defined as a layer by its physical properties? a. Crust b. Mantle c. Outer Core d. Core

4. Which of the choices below represent 100% of the Earth’s mantle? a. Asthenosphere b. Mesosphere c. Asthenosphere and Mesosphere d. Asthenosphere, Mesosphere and the lowermost ultramafic section of the Lithosphere.

5. Earth’s magnetic field is generated by the convection of the: a. Lithosphere b. Asthenosphere c. Mesosphere d. Outer Core e. Inner Core

Explanation / Answer

Answer 1: True. E.g. Geologist use seismograms to read tectonic activities in the lithosphere, various maps and graphs that can help to determine the trend in the rising temperature, fluctuations in Carbon dioxide and sea-level rise which in turn can help to predict global warming and also analyse atmospheric data to predict hurricanes and cyclones.

Answer 2: Internal process. Lava flows are generated from the upper mantle and are commonly seen through volcanic eruptions on the surface of the earth at subduction zones and at mid-oceanic ridges where sea floor spreading is a continuous process. Thus lava is an internal process i.e. below the surface of the earth.

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