C2-The Earths structure

Question 1

name the structure of the earth starting from the middle…

Answer 1

solid inner core, liquid outer core, mantel, lithosphere and the crust

Question 2

what is the outermost layer, made from and how thick is it?

Answer 2

solid rock, and it is 20 KM thick

Question 3

What is the lithosphere made up of?

Answer 3

the crust and the upper part of the mantle, made up of jigsaw pieces called tectonic plates, cold and rigid and can be over 100 KM thick in places

Question 4

is the mantel runny or solid?

Answer 4

non of them it flows very slowly because the further down you go the hotter it gets

Question 5

Which is the solid or the liquid, inner core or outer core?

Answer 5

inner core is the solid and the outer core is the liquid

Question 6

what causes the plates to move?

Answer 6

convection currents

Question 7

what are tectonic plates?

Answer 7

they are big rocky like shafts which float on the mantel because they are less dense

Question 8

on the tectonic plates are 7 different continents which show the different plates, how often do the plates move every year?

Answer 8

2.5 cm

Question 9

why do we use seismic waves?

Answer 9

because the crust is to hard to drill through and it means that we can study the earths structure, these are made by earthquakes and man made explosions

Question 10

what can we use to draw conclusions about the structure of the earth?

Answer 10

we can look at the time it takes to travel through the earth and where the earthquakes are detected

Question 11

what does a p-wave travel through and what does an s- wave travel through? And what structure of the earth can they pass through?

Answer 11

p- waves travel through liquids and solids and s-waves can only travel through solids, s- waves can travel through the mantle but s-waves are not detected in the cores shadow so the outer core must be a liquid P-waves travel faster through the core which tells us that the inner core is solid