Download Mantle`s Core Quiz

Mantle’s Core Quiz
1) The Earth’s core is thought to be composed mainly of
a) nickel.
b) lead.
c) iron.
d) gold.
2) Seismic waves suggest the inner core is ____________.
3) Seismic waves suggest the outer core is…
a) solid.
b) liquid.
c) gaseous.
d) all of the above
4) The Earth’s magnetic field is generated by the convection of liquid metal.
a) true
b) false
5) Which of the following is composed of the densest material?
a) the mantle
b) the core
c) oceanic crust
d) continental crust
6) The __________ of seismic waves was some of the first evidence to demonstrate that the
Earth had a dense core.
7) The change in ___________ of seismic waves was the first evidence that the Earth had two
cores.
8) The Earth’s core is…
a) higher in temperature than the upper mantle.
b) lower in temperature than the lower mantle.
c) the same temperature as lava.
d) none of the above
9) The Earth’s outer core is composed of __________ and iron.
10) The Earth’s core provides _________ to the mantle, causing convection to occur in the mantle.