The dominant rock type erupted by submarine volcanoes at spreading ridges is andesite
Indicate whether the statement is true or false
FALSE
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Water that flows freely downward through voids between soil particles is called ____
a. hygroscopic water b. wicking water c. capillary water d. transpiration water e. gravitational water
Earthquakes occur at subduction zones, but volcanoes do not because the subducted lithosphere is pushed deep into the mantle.
Answer the following statement true (T) or false (F)
Fossil evidence linking the Gondwana continents includes the:a
lake-dwelling Mesosaurus and large land-dwelling reptile Lystrosaurus and Cynognathus. b. freshwater Mesosaurus and dinosaurs Brontosaurus and Tyrannosaurus. c. freshwater crocodiles and the large amphibian Eryops. d. reptile Dimetrodon and the first bird Archaeopteryx. e. lake-dwelling Mesosaurus and the large land-dwelling reptiles Dimetrodon and Edaphosaurus
The term "heterogeneous catalyst" means which of the following?
A) A catalyst which does not have uniform composition. B) A catalyst which is of a different phase from that of the reaction it catalyzes. C) both a and b D) neither a nor b