Nuclear fission

Question 1

Explanation

Answer 1

The splitting of a nucleus and the release of two or three neutrons.

Question 2

Nuclear fission of heavy elements was discovered by

Answer 2

Otto Hahn and his assistant Fritz Strassmann,

Question 3

What is it

Answer 3

A nuclear reaction

Question 4

Split into?

Answer 4

lighter nuclei.

Question 5

Which radioactive isotopes undergo fission?

Answer 5

Uranium-235

Plutonium-239

Question 6

Chain reaction causes what in fission

Answer 6

causes further fission

Question 7

Chain reaction

Answer 7

reaction product causes further reactions

Question 8

How is a chain reaction in a nuclear reactor controlled?

Answer 8

Control rods

Question 9

nuclear reactor, formerly known as an

Answer 9

Atomic pile

Question 10

What does water do in a nuclear reactor?

Answer 10

slows down fission neutrons and acts as a coolant for the fuel rods.

Question 11

How is radiation contained in the reactor?

Answer 11

The core is made of thick steel and enclosed in thick concrete.

Question 12

What is nuclei

Answer 12

Plural of nucleus

Question 13

Nuclear fission only takes place in what temperatures

Answer 13

High

Question 14

Are these advantages of nuclear fission?

• The fuel needed is readily available as heavy hydrogen and is present in sea water ?
• The product, helium, is a harmless inert gas. ?
• The energy released can be used to generate electricity. ?

Answer 14

yes yes yes