1.Which of the following statements is false? Igneous rocks: 
1.form from the freezing of either lava or magma. 
2.form in great quantities along the mid-ocean ridge. 
3.were the first rocks to exist on Earth. 
4.are termed phaneritic if they're fine-grained. 
5.are coarse-grained if they're intrusive. 

2. The dramatic scenery of the Sierra Nevada mountains in California: 
1. owes its existence to erosion of a batholith. 
2.is the result of a continental hotspot. 
3.is especially impressive because of its dark-colored basalt rock. 
4.is composed of fine-grained volcanic rock. 
5.all of the above are true. 

3. A rock is porphyritic. Which of the following words could not be used to describe it? 
1.groundmass 
2.phenocryst 
3.plagioclase 
4.andesite 
5.pyroclastic 

4. Granite: 
1.is a phaneritic rock. 
2.is felsic in composition. 
3.logically could be found in a batholith. 
4.is the coarse-grained equivalent of rhyolite. 
5.all of the above.