7/24/2019 Crossword Nuclear Physics Crossword

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P2 7 Nuclear Physics

Dr Barker

7/24/2019 Crossword Nuclear Physics Crossword

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Across

1. charged atom.

4. Reactions in which one reaction caused further reactions, which in turn causesfurther reactions, etc

7. Every atom contains a positivey charged nuceus consisting of neutrons and

protons. !his is where most of the mass is concentrated, and it is much smaer than

the atom. Eectrons move a"out in the space surrounding the nuceus.

#. !he num"er of protons in a nuceus, sym"o $ %aso caed the proton num"er&.

1'. (eta rods %made of "oron or cadmium& used to a"sor" e)cess fission neutrons in

a nucear reactor so that ony one fission neutron per fission on average goes on to

produce further fission.

11. *uid in a seaed circuit pumped through the core of a nucear reactor to removetherma energy to a heat e)changer.

1+. toms of an eement that contain different num"ers of neutrons in their nucei.

1-. cattering of apha partices %usuay in a narrow "eam& "y nucei of the atoms of

a thin meta foi.

14. !he tota num"er of protons and neutrons in the nuceus of an atom %sym"o &.

Down

1. !he process in which a arge unsta"e nuceus "ecomes sta"e "y emitting an apha

partice.

+. !he process in which sma nucei are forced together so they fuse with each other

to form a arger nuceus, reeasing energy in the process.

-. mode of the atom which supposed that the positive charge was eveny spread

throughout its matter and the negative charge was hed in tiny partices

%eectrons&inside the atom.

/. reactor that reeases energy as a resut of nucear fission inside it.0. !he process in which certain nucei %uranium +-/ and putonium +-& spit into two

fragments when struck "y a neutron, reeasing energy and two or three neutrons as a

resut.

. soid or i2uid used in a nucear reactor to sow fission neutrons down so they can

cause further fission.

Dr Barker