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Flashcards in Nuclear Power Deck (45):
1

Which elements are naturally radioactive?

Bi-U

2

Top number is?

Mass #

3

Bottom number is?

Atomic #

4

Isotopes have different ____________.

Neutrons

5

N-14 + a neutron ->

C-14 + a proton!

6

Is C-14 common?

No

7

Radioactivity is the spontaneous emission of radiation in the form of ___________ or high energy ________ as a result of ____________.

Particles, photons, nuclear reactions.

8

1898

Curie found radium and polonium

9

1905

E=mc^2

10

December 1938

Hahn and Strassman show fission.

11

September 1939

Germany invaded Poland

12

August 1939

Einstein warns FDR

13

December 1941

Pearl Harbor

14

1942

University of Chicago, controlled nuclear chain reaction.

15

July 1945

Atomic Bomb test in Alamogordo, NM.

16

May 8, 1945

VE Day

17

August 1945

Japan was bombed

18

Hiroshima used what type of bomb?

235-U

19

Nagasaki bomb type?

239-Pu

20

U-238 %

99.28

21

235-U %

.72

22

One of largest non excavated U-235 mines in ________?

Pittsylvania

23

Alpha Decay

Produces helium nucleus.

Element down by 2.

Lose 2 neutrons and 2 protons.

24

Beta Decay

Atomic number increases, as the nucleus emits an electron. Changing a neutron to a proton.

25

Chain reactions end when ______

Stable. Pb-206

26

Fission

Adding a neutron so it breaks into parts. LOTS of energy.

27

1 gram of U-235 produces

90 billion kJ

28

Surry and North Anna are __________.

Pressurized water reactors.

29

Surry and NA produce _____MW

1600 and 1800

30

There are ______ reactors at ______ locations in VA.

2,2.

31

USA has _______ reactors.

100

32

World has ______ reactors.

437

33

Nuclear energy produces _____% in USA and _______% in world.

20,14.

34

Uranium ore is what percent uranium?

50-85%

35

Enriched uranium fuel pellets is
_____% 238
and
_____% 235

96.5,3.5

36

UF6

Uranium Hexafluoride

37

UF6 _________ when the temperature is raised.

Sublimes.

38

In centrifuge, what goes to the out?

238

39

Number of rods and called?

15x15
Fuel assembly

40

Each pellet makes a lot more than coal. More than oil.

1 ton, 150 gallons.

41

Control rods are made of ______.

Neutron absorbing material.

42

PWR process (easy)

Reaction heats water which makes steam and turns a turbine.

43

Pressure in PWR

150 atm

44

Control rods elements

Cd In B

45

PWR temperature near

300