ch 25.3 n 25.4

Question 1

what is the boundary that marks a density change between layers?

Answer 1

discontinuity

Question 2

how are continuities identified?

Answer 2

by using seismic waves

Question 3

what are shadow zones(dead zone)?

Answer 3

areas where seismic waves are not recorded

Question 4

bewteen which degrees do shadow zones fall?

Answer 4

105-140

Question 5

is the outer core a liquid or a solid?

Answer 5

liquid

Question 6

is the inner core a liquid or solid? Why?

Answer 6

solid, because of the pressure

Question 7

what makes up the lithosphere?

Answer 7

crust and upper-most mantle

Question 8

what is an asthenosphere?

Answer 8

plastic-like layer which Earth’s plates move

Question 9

which elements make up the mantel?

Answer 9

clacium, aluminum, iron, magnesium

Question 10

what is molten or liquid rock stored inside earth called?

Answer 10

magma

Question 11

where is the ring of fire located?

Answer 11

pacific ocean

Question 12

which two specific locations have volcanic activity due to divergents?

Answer 12

mid atlantic ridge and east african rift

Question 13

are hot spots stationary?

Answer 13

yes

Question 14

what can hot spots create?

Answer 14

islands(hawiian islands)

Question 15

what are the gases that come from a volcano?

Answer 15

water vapor,carbon dioxide, and sulfur dioxide

Question 16

how are volcanoes classified?

Answer 16

size shape and materials