1. Igneous rocks that form beneath the surface are intrusive, or _____________ rocks.

2. ______________ is a very dark green to black, fine-grained volcanic rock composed primarily of pyroxene and calcium-rich feldspar.

3. Granitic rocks are often referred to as being ______________, a term derived from feldspar and silica (quartz).

4. Igneous rocks composed of rock fragments, such as ash or angular blocks, are said to have a(n) ______________ texture.

5. Two of the most common geological processes in the solar system are _______________ and _______________________________________ .

6. ______________ is the geological term for melted rock beneath the surface of the Earth.

7. Igneous rocks that form on the surface of the Earth are _______________________ rocks.

8. Some beneficial effects of volcanism include ___________________, __________________, and _____________________________________.

9. Some detrimental effects of volcanism include __________________, _________________, and ________________________________.

10. A glassy volcanic rock is called ______________.

11. Fine-grained igneous rocks have a(an) ______________ texture.

12. Coarse-grained igneous rocks have a(an) ______________ texture.

13. Igneous rocks with phenocrysts have a(an) ______________ texture.

14. Volcanic rocks with frozen gas bubbles have a(an) ______________ texture.

15. Frozen volcanic froth is called ______________.

16. Plutonic igneous rocks are only exposed at the surface of the Earth when two things happen:___________________ and _______________________.

17. Red, hot stuff flowing down the flanks of a volcano is called __________________.

18. Magma works its way through the crust towards the Earth’s surface because it is ______________.

19. The Italian volcano ___________________ covered Pompeii with ash in 79 A.D.

20. The eruption of ___________________ in 1815 caused the "year with no summer."

21. Krakatau is really located ______________ of Java.