WorksheetsRock cycle and Igneous rocks
Total questions: 15
Worksheet time: 8mins
What classification of rocks is formed from solidification and crystallization of molten rocks?
Sedimentary rocks
Igneous rocks
Metamorphic rocks
All of them
Which type of rock covers 75% of the earth's surface?
Extrusive rocks
Sedimentary rocks
Matamorphic rocks
Igneous rocks
Which type of igneous rocks based on composition has the highest amount of silica content?
mafic rocks
felsic rocks
intermediate rocks
ultramafic rocks
How does the amount of silica affect the color of igneous rock?
It doesn't matter what color is.
It has no effect at all.
The more the silica it has, the lighter the color
The lesser the silica ha, the lighter the color is.
What is another name for intrusive igneous rock?
Lava rock
Molten rock
Volcanic rock
Plutonic rock
Which of the following rocks are formed when lava cools and solidifies on the earth's surface?
Volcanic rock
Batholiths
Mafic rocks
Felsic rocks
What happens to the molten rocks when they reach the Earth's Surface?
Their temperature remains the same.
They cool down and solidify.
They remain semi-liquid molten rocks.
They flow continuously.
Which of the following is NOT an extrusive igneous rock?
rhyolite
obsidian
basalt
granite
What is the size of the crystals if the rock cools slowly and forms below the Earth's surface?
small
no crystals
large
glassy
What is this rock?
granite
basalt
pumice
obsidian
Which of the following is NOT true about extrusive rocks?
They cool down quickly.
They have small crystals.
These are formed beneath the Earth.
Basalt and scoria are example of these rocks
What type of igneous rock texture has large minerals?
aphanitic
phaneritic
glassy
vesicular
Which type of igneous rocks based on composition has the lowest amount of silica content?
intermediate rocks
mafic rocks
felsic rocks
extrusive rocks
Which igneous rock is an extrusive rock?
What are the two most abundant igneous rocks in Earth's crust? (HINT: They are the two most common igneous rocks!)
pegmatite and pumice
gabbro and obsidian
halite and gold
granite and basalt
