6.4 changes in the earth

Question 1

plate boundary meaning

Answer 1

places where tectonic plates meet

Question 2

subduction meaning

Answer 2

one tectonic plate moving under another

Question 3

fold mountains meaning

Answer 3

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

Question 4

define earthquake

Answer 4

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

Question 5

define volcanoes

Answer 5

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

Question 6

define lava

Answer 6

molton rock coming out onto earths surface

Question 7

magnitude meaning

Answer 7

size/strength of earthquake

Question 8

define active

Answer 8

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

Question 9

define inactive/dormant

Answer 9

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

Question 10

define extinct

Answer 10

unlikely to erupt again

Question 11

what are the 3 types of plate boundaries?

Answer 11

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