Q: What device detects and measuresee earthquake waves?   A:
OPTIONS:
- stenograph
- polygraph
- sphygmomanometer
- seismograph
seismograph
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Q: What type of thin lava forms shapes and tubes as it flows?   A:
OPTIONS:
- spicule
- xeric
- xerophyte
- pāhoehoe
pāhoehoe
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Q: Covalent solids are formed by networks or chains of atoms or molecules held together by what?   A:
OPTIONS:
- ionic bonds
- bail bonds
- gravitational bonds
- covalent bonds
covalent bonds
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Q: Compounds like sodium chloride form structures called what?   A:
OPTIONS:
- ions
- microorganisms
- hydrocarbons
- crystals

crystals
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