Chapter25pt3 and Chapter25.4

Question 1

what is the boundary that marks a density change between layers

Answer 1

discontinuity

Question 2

what are shadow zones

Answer 2

are areas where no simic waves are recorded

Question 3

Viscosity is the measure of a fluids resistance to flow.

Answer 3

Viscosity

Question 4

Silica is the chemical compound silicon dioxide, Sio2 which is common ingredient in most magma

Answer 4

Silica

Question 5

Cinder Cone Volcanoes tend to be small, have heights in the hundreds of meters range, and have short eruption cycles.l

Answer 5

Cinder Cone Volcanoes

Question 6

Shield volcanoes are broad, flat structures composed of layer of lava flows.

Answer 6

Shield

Question 7

Composite volcanoes are large and steep side often thousands of meters high and tens of kilometres.

Answer 7

Composite volcanoes

Question 8

What elements make up the core?

Answer 8

iron and nickel

Question 9

what element make up the mantle?

Answer 9

calcium, aluminum, iron, and magnesium

Question 10

what is the astnenosphere?

Answer 10

a plastic like layer, which Earths plates move

Question 11

what makes up the lithosphere?

Answer 11

rocky material- mostly silicates, the crust and upper most mantle.

Question 12

Is the inner core a solid or liquid?

Answer 12

liquid

Question 13

between what degrees do shadow zones fall?

Answer 13

105-140

Question 14

what are shadow zones

Answer 14

seismic waves cannot be recorded

Question 15

Discontinues can be identified by what?

Answer 15

seismic waves

Question 16

What is the boundary that marks the density change between layers

Answer 16

Discontinuity