FREE EARTH SCIENCE AND STUDY GAMES ABOUT

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FREE EARTH SCIENCE AND STUDY GAMES ABOUT

IGNEOUS AND TERNARY EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -28 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: In the diagram on the board, what percent of C does #1 have?

Answer:

20%

Question 2: Gabbro is chemically most similar to which of the following rocks?

Answer:

basalt

Question 3: A dark colored igneous rock with no visible crystals cooled how?

Answer:

quickly on the earth's surface Question 4: Igneous rocks with a texture that is so fine-grained that the crystals are too small to see is what?

Answer:

aphanitic

Question 5: Igneous rocks with a two-stage intrusive-extrusive origin are recognized by a texture that is called what?

Answer:

porphyritic

Question 6: In the diagram on the board, what percent of A does #1 have?

Answer:

60% Question 7: Which of the following is an indication of crystal size in an igneous rock?

Answer:

texture

Question 8: In the diagram on the board, what percent of A does #3 have?

Answer:

10%

Question 9: A vesicular felsic rock is called what?

Answer:

pumice

Question 10: Natural glass, such as obsidian, forms when magma cools how?

Answer:

cools too rapidly for crystals to form

Question 11: In the diagram on the board, what percent of B does #3 have?

Answer:

70%

Question 12: In the diagram on the board, what percent of A does #2 have?

Answer:

25%

Question 13: Which of the following would most likely form from a mafic magma that cooled slowly underground?

Answer:

gabbro Question 14: Which of the following rocks is a member of the intermediate family?

Answer:

andesite

Question 15: In the diagram on the board, what percent of B does #2 have?

Answer:

40% Question 16: Which of the following is a fine-grained member of the felsic family?

Answer:

rhyolite

Question 17: In the diagram on the board, what percent of B does #1 have?

Answer:

20%

Question 18: What are the texture and composition of gabbro?

Answer:

texture- coarse-grained (phaneritic) composition - mafic

Question 19: In the diagram on the board, what percent of C does #3 have?

Answer:

20%

Question 20: Felsic rocks are high in what?

Answer:

silica

Question 21: In the diagram on the board, what percent of B does #4 have?

Answer:

25% Question 22: Igneous rocks formed by explosive volcanic activity have a texture that is termed...

Answer:

pyroclastic Question 23: In general, if magma cools quickly, will the crystals be smaller or larger?

Answer:

smaller

Question 24: What is the texture of tuff?

Answer:

pyroclastic

Question 25: In the diagram on the board, what percent of C does #4 have?

Answer:

75%

Question 26: In the diagram on the board, what percent of A does #4 have?

Answer:

0%

Question 27: In the diagram on the board, what percent of C does #2 have?

Answer:

35% Question 28: Large crystals found in a fine-grained groundmass can indicate what?

Answer:

origin from a magma with an early intrusive phase followed by an extrusive phase and that it is a rock of mixed volcanic-plutonic origin