What are the basic differences between the disciplines of physical and historical geology?
A) Physical geology is the study of fossils and sequences of rock strata; historical geology is the study of how rocks and minerals were used in the past.
B) Historical geology involves the study of rock strata, fossils, and geologic events, utilizing the geologic time scale as a reference; physical geology includes the study of how rocks form and of how erosion shapes the land surface.
C) Physical geology involves the study of rock strata, fossils, and deposition in relation to plate movements in the geologic past; historical geology charts how and where the plates were moving in the past.
D) none of the above
Ans: B) Historical geology involves the study of rock strata, fossils, and geologic events, utilizing the geologic time scale as a reference; physical geology includes the study of how rocks form and of how erosion shapes the land surface.
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Why are plate boundaries the sites of most geologic activity?
A) Plates interact with one another at their boundaries. B) Plate boundaries are zones of weak crustal material. C) Heat from Earth's core escapes between tectonic plates. D) Plate boundaries are not sites of most geologic activity.
Which of the following best matches the description?Stage in the flow of energy in an ecosystem.
A. habitat B. secondary consumer C. interspecific competition D. producer E. biomass F. community G. intraspecific competition H. limiting factor I. ectoparasite J. herbivore K. nitrogen-fixing bacteria L. carbon cycle M. nitrogen cycle N. omnivore O. trophic level P. denitrifying bacteria
Calm winds near the equator are called the ____________________
Fill in the blank(s) with correct word
An object emits a range of electromagnetic energy wave lengths because
A. all molecules vibrate at the same rate. B. not all molecules vibrate at the same speed. C. lowest and highest vibration rates are cancelled. D. relativity theory states that objects attain varying terminal velocities.