Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Volcanoes
Science
| Term | Definition |
|---|---|
| 1. volcano | a weak spot in the crust where molten material, or magma comes to the surface |
| 2. lava | liquid magma that reaches the surface |
| 3. magma | a molten mixture of rock-forming substances, gases, and water from the mantle |
| 4. Ring of Fire | a major belt of volcanoes that rims the Pacific Ocean |
| 5. hot spot | an area where material from deep within the mantle rises and then melts, forming magma |
| 6. shield volcano | gently sloping mountain formed by repeated lava flows |
| 7. composite volcano | mountain formed by lava flows alternating with explosive eruptions |
| 8. cinder cone volcano | cone-shaped mountain formed from ash, cinders, and bombs |
| 9. sill | forms when magma squeezes between layers of rock and hardens |
| 10. dike | forms when magma forces itself across layers of rock and hardens |
| 11. batholith | a mass of rock formed when a large body of magma cools inside the crust |
| 12. lava plateau | high, level area formed by repeating lava flows |
| 13. extinct | a volcano that is unlikely to erupt again |
| 14. dormant | a volcano that is not currently active, but may become active in the near future |
| 15. active | a volcano that is erupting or showing signs of erupting in the near future |
| 16. element | a substance that cannot be broken down into other substances |
| 17. viscosity | the resistance of a liquid to flowing |
| 18. silica | a compound made up of particles of oxygen and silicon, it makes magma thicker |
| 19. pahoehoe | hot, fast moving lava |
| 20. aa | cool, slow moving lava |
| 21. compound | a substance made of two or mare elements that have been chemically combined |
| 22. volcanic ash | fine rocky particles as small as a a speck of dust |
| 23. magma chamber | a pocket of magma beneath the surface |
| 24. crater | a bowl-shaped area that may form at the top of a volcano around the central vent |
| 25. vent | an opening at the top of a volcano where molten rock and gas leave |
| 26. pipe | a long tube in the ground that connects the magma chamber to Earth’s surface |
| 27. caldera | a hole left by the collapse of a volcanic mountain |
| 28. hot spring | when ground water heated by a nearby body of magma rises to the surface and collects in a natural pool |
| 29. geyser | a fountain of water and steam that erupts from the ground |
Created by:
1964968716
Popular Earth Science sets