Compared with their overall size, the ____ planets have small rocky cores.

Compared with their overall size, the ____ planets have small rocky cores.
 A)Descartes
 B)terrestrial
 C)Jovian
 D)nebular
 E)dwarf

Question 2

What are the two types of crust?
 A)oceanic and continental
 B)inner crust and outer crust
 C)lower crust and upper crust
 D)terrestrial and aquatic
 E)metamorphic and sedimentary

Question 3

Which basic force is responsible for the breakdown of an atom's nucleus, thereby producing radioactive decay?
 A)electromagnetic
 B)weak nuclear
 C)strong nuclear
 D)molecular affinity
 E)interstitial

Question 4

Which basic force binds atoms into molecules?
 A)gravity
 B)molecular affinity
 C)strong nuclear
 D)electromagnetic
 E)weak nuclear

Question 5

What are the subdivisions of the geologic time scale, listed in order from longest to shortest time intervals?
 A)eon, era, period, and epoch
 B)epoch, eon, era, and period
 C)eon, epoch, period, and era
 D)era, eon, period, and epoch
 E)eon, era, epoch, and period

Question 6

What technique injects fluids under very high pressure into organic-rich shales to recover trapped natural gas?
 A)mechanical fracturing
 B)hydraulic fracturing
 C)pressurized mining
 D)stress mining
 E)hydraulic drilling

Question 7

What is the study of Earth materials and the processes operating within Earth and on its surface?
 A)physical geography
 B)meteorology
 C)geomorphology
 D)historical geology
 E)physical geology

Question 8

Which subsystem of Earth supplies heat for convection in the mantle?
 A)atmosphere
 B)hydrosphere
 C)biosphere
 D)core
 E)lithosphere

Question 9

Sudden or catastrophic events, such as volcanic eruptions and tsunami, can be explained by ____.
 A)big bang theory
 B)theory of natural selection
 C)third law of thermodynamics
 D)principle of uniformitarianism
 E)scientific method