6.4 changes in the earth Flashcards

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1
Q

plate boundary meaning

A

places where tectonic plates meet

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2
Q

subduction meaning

A

one tectonic plate moving under another

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3
Q

fold mountains meaning

A

earths crust pushed upward due to two tectonic plates pushing against each other

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4
Q

define earthquake

A

sudden movement in the earths crust and upper mantle caused by pressure between 2 tectonic plates

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5
Q

define volcanoes

A

openings in earth crust where lava, ash, and gas come out onto the earths surface

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6
Q

define lava

A

molton rock coming out onto earths surface

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7
Q

magnitude meaning

A

size/strength of earthquake

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8
Q

define active

A

has erupted in last few thousand years and is likely to erupt again

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9
Q

define inactive/dormant

A

possibly erupt in the future but has not erupted for thousands of years

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10
Q

define extinct

A

unlikely to erupt again

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11
Q

what are the 3 types of plate boundaries?

A

convergent — plates moving together, divergent — plates moving apart, transform — plates sliding past each other

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