1.) What Latin word was the term “igneous” derived from?
A. ignus B. lithos C. meta D. sedere
2.) What classification of rocks is formed from solidification and crystallization of molten rocks?
A. igneous rocks
B. metamorphic rocks
C. sedimentary rocks
D. all are correct
3.) Which type of igneous rocks based on composition has the highest amount of silica content?
A. felsic B. intermediate
C. mafic D. ultramafic
4.) Which of the following is/are the process/es of igneous rocks?
A. sedimentation
B. recrystallization
C. solidification and crystallization
D. solidification and recrystallization
5.) Which of the following is NOT an extrusive igneous rock?
A. basalt B. granite
C. obsidian D. rhyolite
6.) What happens to the molten rocks when they reach the Earth’s surface?
A. They flow continuously.
C. Their temperature remains the same.
B. They cool down and solidify. D. They remain semi-liquid molten rocks.
7.) Which type of igneous rock forms when magma hardens beneath Earth's surface?
A. clastic B. extrusive
C. intrusive D. non-clastic
8.) Which type of igneous rock forms from lava on Earth's surface?
A. clastic B. extrusive
C. intrusive D. non-clastic
9.) Which of the following is NOT an intrusive igneous rock?
A. diorite B. gabbro
C. granite D. obsidian
10.) What is the size of the crystals if the rock cools slowly and forms below the Earth’s surface?
A. large C. small
B. no crystal D. none of the above
11.) Which of the following is TRUE about intrusive rocks?
A. They have fine grains.
C. They are formed from lava.
B. They are usually dark
D. They have usually low density.
12.) Which of the following is NOT true about extrusive rocks?
A. They cool down quickly. C. These are formed beneath the Earth
B. They have small crystals. D. Basalt and scoria are example of these rocks.
13.) How are igneous rocks classified based on their origin?
A. large or small crystals
B. plutonic and volcanic
C. coarse or fine grains
D. from magma or lava
14.) How does the amount silica affect the color of igneous rock?
A. It has no effect at all.
C. The lesser the silica has, the lighter the color is.
B. It doesn’t matter what the color is.
D. The more the silica it has, the lighter the color is.
15.) What type of igneous rock texture has large minerals?
A. aphanitic B. glassy
C. phaneritic D. vesicular
Share
Answer:
1.A
2.A
3.D
4.C
5.D
6.D
7.A
8.C
9.C
10.C
11.C they are formed by lava
12.A
13.A
14.D
15.C
Explanation:
diko po sure yung ibang sagot ko.