Up From The Inferno - Volcano

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Which of the following statements is false? Igneous rocks: Correct Answer:  are termed phaneritic if they're fine-grained.    Question 2 The dramatic scenery of the Sierra Nevada mountains in California: Correct Answer:  owes its existence to erosion of a batholith.    Question 3 A rock is porphyritic. Which of the following words could not be used to describe it? Correct Answer: pyroclastic    Question 4 Granite: Correct Answer: all of the above.    Question 5 Which of the following igneous rocks does not have a glassy texture? Correct Answer: pegmatite    Question 6 After an explosive volcanic eruption on an island, the surrounding sea is full of light gray floating rock. What must it be? Correct Answer: pumice    Question 7 Which of the following statements is false? Volatiles that come out of the Earth as volcanic products: Correct Answer: usually consist of 50% sulfur dioxide.    Question 8 Intrusive igneous rocks: Correct Answer: cool slowly and are coarse-grained.    Question 9 Bowen's reaction series: Correct Answer: allows a geologist to predict what minerals will be together in igneous rocks.    Question 10 Bowen's reaction series: Correct Answer: all of the above are true statements.    Question 11 Which of the following statements is false? Felsic magma: Correct Answer: is less viscous than mafic magma.    Question 12 Which of the following statements is false? Mafic minerals: Correct Answer: form rhyolite and granite.    Question 13 Magma may cool and freeze to become solid igneous rock: Correct Answer: all of the above are true statements.    Question 14 Factors that influence the chemical composition of magmas may include: Correct Answer: all of the above are true statements.    Question 15 Identify the false statement. The youthful Earth had numerous heat sources for igneous activity, including: Correct Answer: decay of all of its radioactive elements; almost none remain today.    Question 16 Refer to the Geotherm/Melting Curve for Peridotite diagram (Figure 4.3) to identify the false statement. Correct Answer: The area to the left of the solidus dashed line represents melted rock; the area to the right of the liquidus dashed line represents solid rock.    Question 17 Interpret this diagram (Figure 6.3) to find the false statement. Point A represents rock that fits the following description: Correct Answer: its physical state is molten.    Question 18 Identify the false statement. Hot solid rock in the Earth: Correct Answer: must reach a minimum temperature of 1100 °C before it melts.    Question 19 Magmas have a variety of chemical compositions because Correct Answer: all of the above are true.    Question 20 Identify the false statement. Magma moves up towards Earth’s surface: Correct Answer: more quickly as it cools and therefore becomes less viscous.    Question 21 Which of the following is NOT an intrusive igneous structure: Correct Answer: baked zone    Question 22 Identify the false statement. Pegmatites: Correct Answer: have intruded at great depth and cooled very slowly.    Question 23 Wet igneous rock (rock that contains volatiles) melts at a lower temperature than does the dry version of that same rock. Correct Answer:  True    Question 24 Volatile-rich magma develops gas bubbles as it rises, and this creates even more buoyant force to move the magma upward more aggressively. Correct Answer:  True    Question 25 Vesicles are pieces of country rock broken off by intruding magma. Correct Answer:  False    Question 26 The deeper an igneous intrusion, the slower it cools. Correct Answer:  True    Question 27 Igneous rocks formed of igneous debris blown out of a volcano are called pegmatites. Correct Answer:  False    Question 28 “Dry” magmas contain no volatiles; “wet” magmas contain up to 50% of the volatile, water. Correct Answer:  False    Question 29 The sequence of mineral production that takes place in a cooling magma, called Bowen’s reaction series, is an example of the process called stoping. Correct Answer:  False    Question 30 “Tuff” and “breccia” are both fragmental igneous rocks. Correct Answer:  True If you have any test reviews, homeworks, guides, anything school related that you think can be posted on this website, reach out to me at makingschooleasier@gmail.com