Q: What are the two most common silicates?    Choices:  - Analcime and Feldspar  - Petalite and Quartz  - Petalite and Analcime  - feldspar and quartz  A:
feldspar and quartz

Q: The tyndall effect refers to the scattering of what by colloidal particles?    Choices:  - primary colors  - dark matter  - dust mites  - visible light  A:
visible light

Q: What kinds of rocks can change and become new types of rocks?    Choices:  - igneous rocks  - metamorphic rocks  - sedimentary rocks  - any types of rocks  A:

any types of rocks