Download - 6th Grade Ch. 3 Sec. 2 Properties of Magma
Ch. 3 Sec. 2 Ch. 3 Sec. 2 Properties of MagmaProperties of Magma
element
• substance that cannot be broken down into other substances
• ex: carbon, hydrogen
compound
• substance made of 2 or more elements that have been chemically combined
• ex: water, carbon dioxide
physical property
• any characteristic of a substance that can be observed or measured w/out changing composition of substance
• ex: freezing point
chemical property• property that
produces change in composition of matter
• ex: ability to burn
viscosity• physical property
• resistance of liquid to flowing
• greater viscosity-slower it flows
Question: How Fast do Liquids Flow?• Hypothesis: I predict that ____________ • Procedure: See page 87
Liquid Time Flowed-Fast or slow/
ViscosityHoney 98 sec Slow-greater
viscosity-highVegetable Oil 53 sec fast-lower
viscosity-low
low viscosity
high viscosity
high viscosity
low viscosity
high viscosity
low viscosity
viscosity of magma
• depends on silica content & temp.
• silica= oxygen + silicon
• more silica higher viscosity
pahoehoe• fast-moving, hot lava• low viscosity• looks like solid mass of wrinkles,
billows & ropelike coils
http://www.youtube.com/watch?v=0jry-iMXjik
aaaa
aa surge
• cooler & slower than pahoehoe
• hardens into rough chunks
http://www.youtube.com/watch?v=iyIV5fd1Aww
How are pahoehoe and aa different?
The viscosity of magma depends
on what two factors?
1. silica content
2. temperature
compound
• substance made of 2 or more elements that have been chemically combined
element
• substance that cannot be broken down into other substances
chemical property or physical property?
•ability to burn
chemical property
low viscosity
high viscosity
high viscosity
low viscosity
high viscosity
low viscosity