practical

?
  • Created by: ra9718
  • Created on: 26-04-16 17:50
what is the formula to calculate the velocity of substance A and B at each temperature?
velocity=distance/time
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when does an increase in velocity occurs?
it occurs with an increase in temperature
2 of 18
what is the relationship between viscosity and the extent of lava flow if temperatures are the only variable?
when lavas are hotter, they are less viscous, so they travel further; and when lavas are cooler, they are more viscous so they will travel less far.
3 of 18
what health and safety hazards must be considered?
risks with breakage of glassware/Scalding of water or burns from the tube/Danger with electricity and water mixing.
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what is the texture of the pahoehoe?
ropey and wrinkled surface
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where in the lava flow is the pahoehoe formed?
in the centre
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what rock type is formed in the pahoehoe lava?
basalt
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what happens to the surface?
it cools quickly but the lava still flows underneath
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what is the form and shape of pillow lavas?
pillow and bulbous shape(rounded structures)
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how are pillow lavas formed?
Formed by eruption of lava under water, the outside of each pillow shape cooled quickly. Each pillow cooled in layers.
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what type of rock is formed in the pillow lavas?
basalt
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what are the characteristics of rhyolite?
Banded darker and lighter bands. Darker layers look glassy.
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how is rhyolite formed?
Flow banding- crystallising parallel to flow. Rapid cooling means no crystals form in glassy layers
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what do you need to label in the sketch?
fold axis/fold limb/mineral veins/joints/ hinges/fault/competent and incompetent bed
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what measurements do you need to make?
Thickness of any bed and labelled correctly, Dip of the left or right limb
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what do you need to look for mapping?
Order of rocks/ Igneous intrusion- dyke or sill, batholith/ From intrusion- rocks metamorphosed in aureole/ Folding- syncline or anticline/ Beds tilted/ Erosion and unconformity/ Faulting/ Erosion to form present day land surface
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what is an anticline?
upward closing fold
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what is a syncline?
downward closing fold
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Other cards in this set

Card 2

Front

when does an increase in velocity occurs?

Back

it occurs with an increase in temperature

Card 3

Front

what is the relationship between viscosity and the extent of lava flow if temperatures are the only variable?

Back

Preview of the front of card 3

Card 4

Front

what health and safety hazards must be considered?

Back

Preview of the front of card 4

Card 5

Front

what is the texture of the pahoehoe?

Back

Preview of the front of card 5
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