4.1

Question 1

a substance composed of two or more elements

Answer 1

compound

Question 2

vibrations produced by earthquakes

Answer 2

seismic wave

Question 3

a machine that measures the times at which seismic waves arrive at different distances from an earthquake

Answer 3

siesmograph

Question 4

the soft layer of the mantle on which tectonic plates move

Answer 4

asthenosphere

Question 5

the thin and solid outermost layer of the Earth above the mantle

Answer 5

crust

Question 6

the central part of the Earth below the mantle

Answer 6

core

Question 7

the solid, outermost layer of the Earth that consists of the crust and the solid rigid upper part of the mantle

Answer 7

lithosphere

Question 8

the layer of rock between the Earths crust and core

Answer 8

mantle

Question 9

the strong, lower part of the mantle between the asthenosphere and the outer core

Answer 9

mesosphere

Question 10

a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle

Answer 10

tectonic plates