Quiz #3

1 September 2011

S.I. Session 3 Quiz

Part a) Match the term to its definition:

                TERMS:

a) Geodynamo  b) Solar Energy                  c) Open System

d) The Moho      e) Continents                    f)Asthenosphere

g)The Core          h) The Mantle                   i) Lithosphere

                DEFINITIONS:

1)__This part of the earth is solid because of extreme pressures, it is made out of an iron nickel material, the same material meteorites are made out of.

                                2)__These land masses are buoyant with respect to the dense, iron-rich, oceanic crust.

3)__This component of the earth contains 67% of the earth’s mass.

4)__This is the interface between the crust and the mantle.

5)__This is responsible for earth’s climate and weather.

6) __ Earth is considered to be one of these, which can exchange heat and mass with its surroundings.

7) __ This underlies the lithosphere and is a hot, ductile, solid.

Part b) Put these elements that make up the crust in order from most prevalent to least prevalent:

1)      Calcium

2)      Magnesium

3)      Other components

4)      Iron

5)      Oxygen

6)      Silicon

7)      Aluminum

Part c) True or False:

                Mark T (true) or F (false) in the blank provided:

                                1)__Heat radiating from earth balances solar input and heat from interior.

2)__Themantle is mechanically strong and does not flow to support the continents.

                                3)__Earth is in thermal equilibrium with its surroundings.

4)__The geographic north pole and the magnetic north pole are not located at the same point.

5)__The inner core of the earth is solid because iron “freezes” at high pressure.

6)__Most of earths total mass is located in the crust.

7) __ As the earth cools over time the solid iron core is shrinking.

8) __ A bar magnet, electromagnet, and the geodynamo all produce similar magnetic fields.