56. The limit beyond which the stars suffer internal collapse is called the

A. Raman Effect
B. Chandrasekhar limit
C. Aurora Borealis
D. Quasan Zone

57. The groundwater that occurs when the flow of the subterranean water is not confined by the presence of impermeable layers is called

A. unconfined groundwater
B. confined groundwater
C. aquifer
D. artesian

58. The gulf that separates Finland and Sweden in Europe is

A. the Gulf of Bothnia
B. the Gulf of Lions
C. the Gulf of Genoa
D. the Gulf of Venice

59. The largest continent in the world is

A. Africa
B. Asia
C. Australia
D. Antarctica

60. The landforms that are created by massive earth movements due to plate tectonics are called

A. structural landforms
B. weathering landforms
C. erosional landforms
D. depositional landforms