The ________ the lava, and the greater the amount of gas trying to escape, the more violent the eruption.
A. more viscous
B. hotter
C. more oxygenated
D. more fluid
E. older
Answer: A
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Of the following statements about water's latent heat and changes in state, which is/are true?
-When water vapor condenses and forms a liquid, its latent heat of condensation releases heat to the environment; this is what powers hurricanes. -In the vapor state, there are no weak (hydrogen) bonds between water molecules. -In the solid state, all water molecules are connected by weak (hydrogen) bonds. -In all three states of matter, there are no strong (covalent) bonds. -When water evaporates, its latent heat of evaporation absorbs heat. -Latent heat allows water to transfer energy from one place to another.
Which of the following statements best describes extrusive igneous rocks?
A. Cool on the surface and have a fine-grained texture (small mineral crystals). B. Cool beneath the surface and have a course-grained texture (large mineral crystals). C. Cool on the surface and have a course-grained texture (large mineral crystals). D. Cool beneath the surface and have a fine-grained texture (small mineral crystals).
Earth’s mean global temperature has changed significantly over the course of our planet’s history
a. True b. False
Rivers downcutting into a land surface, in the absence of other forces, usually tend to erode a ___-shaped form.
a - V b - U c - delta d - flat bottomed e - groove