Formation of a rift valley is due to ________
A. The formation of fold mountains
B. The forces of tension in the earth's crust
C. The subsidence of the floor of a river valley
D. The over-deepening of a valley by ice action
Answer: Option C
A. The formation of fold mountains
B. The forces of tension in the earth's crust
C. The subsidence of the floor of a river valley
D. The over-deepening of a valley by ice action
Answer: Option C
What is the difference between a geyser and a hot spring?
A. Water is ejected explosively in a geyser
B. Water from the geyser may be cold
C. Geysers are found on volcanic mountains
D. Geysers are more common in cold countries
The intensity of earthquakes is measured on ________
A. Beaufort scale
B. Richter scale
C. Secant scale
D. Mercalli scale
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