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1. 
The interior of the Earth is hot due to which (pick all correct answers)
A.
The core is nuclear (radioactive)
B.
Solar radiation from the sun
C.
Collisions from the asteroids and planetesimals during Earth's formation
D.
Pressure from the rocks above pushing down
E.
Friction from more dense materials sinking and less dense materials rising during Earth's formation
F.
Gravitational pull of the moon on the Earth
2. 
Why did the Earth get hotter during Earth's formation? (pick more than one answer)
A.
When the planetesimals collided energy was released as heat
B.
The solar radiation from the sun melted the Earth
C.
Friction from more dense materials sinking and less dense materials rising during Earth's formation
D.
The radioactive core releases heat energy
E.
The gravitational pull between the sun and the moon
3. 
During Earth's formation Earth was
A.
Solid
B.
Liquid
C.
Liquid and solid
4. 
Which is true?
A.
The Earth is still cooling off from the heat generated during its formation
B.
The Earth has long cooled off from the heat generated during its formation
5. 
Why hasn't the interior of the Earth cooled off? (pick 2)
A.
The crust acts as an insulator and keeps the heat in
B.
The radioactive core continues to release heat energy
C.
The sinking dense uranium and iron continues to cause frictional heat
D.
The planetesimals colliding with Earth continues to generate heat
E.
The gravitational pull between the Earth and moon continues to occur today
F.
The solar radiation from the sun continues to strike Earth
6. 
Very deep mines are ...
A.
Cool/cold in temperature
B.
Warm/hot in temperature
7. 
The core is nuclear for what reason?
A.
Contains radioactive uranium
B.
Contains radioactive iron
C.
Contains radioactive nickel
D.
This is where the magnetic field is generated
8. 
When the Earth was forming it was struck by planetesimals. When these planetesimals struck Earth which occurred?
A.
Friction was generated and heat released
B.
Explosions occurred causing Earth to break up into pieces
C.
A magnetic field was created
D.
All choices
9. 
During Earth's formation more dense materials sank to the core. Less dense materials floated to the surface. What occurred due to this?
A.
Friction was created generating heat
B.
Radioactive material was created by the reaction causing the core to be formed
C.
The movement caused the Earth to begin to spin. This caused the day
D.
All choices
10. 
Which is the only item that is still generating heat today?
A.
The radioactive core releases heat
B.
Heat generated during Earth's formation
C.
Gravitational pull between the sun and moon
D.
Earth being hit by solar radiation from the sun
E.
All choices
11. 
During Earth's formation planetesimals and asteroids did this with Earth generating heat
A.
Collided
B.
Earth separated into three layers due to density
C.
Radioactive core
D.
All choices
12. 
During Earth's formation more dense items sank and less dense items rose. As they went by one another heat was generated by this.
A.
Friction
B.
Nuclear/Radioactive reactions in the core
C.
Pressure
D.
All choices
13. 
We are still cooling off from the heat generated during Earth's formation
A.
True
B.
False
14. 
As we go towards the surface the pressure
A.
Increases
B.
Decreases
15. 
When collision occurred during Earth's formation the temperature...
A.
Increased
B.
Decreased
C.
Stayed the same
16. 
The Earth is still generating heat from Earth's formation
A.
True
B.
False
17. 
During Earth's formation and the materials separated into the three layers what was released from this separation?
A.
Heat
B.
Radiation
C.
Pressure
D.
All choices
18. 
Found in the core that causes the core to be hot
A.
Uranium
B.
Iron
C.
Nickel
D.
All choices
19. 
This has the least effect on why the interior of the Earth is hot
A.
Pressure
B.
Radioactive core
C.
Heat from the formation of Earth
20. 
Convection currents occur is what layer of Earth
A.
Crust
B.
Mantle
C.
Core
21. 
What is the heat source for convection currents?
A.
Radioactive Core
B.
Radioactive Core and Mantle
C.
Thermal energy of the plastic mantle
D.
Magnetic radiation of the spinning planet
22. 
Why do convection currents rise?
A.
They are hot
B.
They are hot and less dense
C.
They are hot and more dense
D.
They are hot and lightweight
23. 
Why do convection currents fall?
A.
They are cool
B.
They are cool and less dense
C.
They are cool and more dense
D.
They are cool and lightweight
E.
They are cool and heavy
24. 
What type of material are convection currents made out of?
A.
Plastic basalt rock
B.
Melted basalt rock
C.
Air
D.
Lava
E.
Radioactive uranium and iron
25. 
What is the correct energy transfer/transformation statement for the creation of convection currents?
A.
The core's nuclear energy becomes the mantle's heat energy
B.
The core's heat energy becomes the mantle's kinetic energy
C.
The core's heat enregy becomes the mantle's heat energy
D.
The core's nuclear energy becomes the mantle's nuclear energy
26. 
Why is the crust solid
27. 
What are the circular items called?
A.
Convection currents
B.
Mantle currents
C.
Heat currents
D.
Basaltic currents
28. 
What is above the convection currents
A.
Lithosphere (crust and upper mantle)
B.
Crust only
C.
Asthenosphere
D.
Core