P2 Topic 5

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The fission of U-235 releases 2 or 3

  • A. Protons
  • B. Neutrons.
  • C. Electrons.
  • D. Alpha particles.

Control rods are put in a nuclear reactor to

  • A. Speed up alpha particles
  • B. Slow down protons
  • C. Slow down neutrons
  • D. Absorb neutrons

A nuclear chain reaction produces particles which can

  • A. Cause fission of a daughter nucleus
  • B. Cause fission of another uranium nucleus
  • C. Make a daughter nucleus stable
  • D. Make another uranium nucleus stable

Nuclear fusion releases

  • A. Protons
  • B. Uranium
  • C. Energy
  • D. Electrons

Some properties of nuclear fission and nuclear fusion are shown in the diagrams below. Which diagram correctly classifies the properties?


  • A.
  • B.
  • C.
  • D.

The diagrams show four arrangements of control rods, fuel rods and moderator in a nuclear reactor. Which arrangement would produce energy at the fastest rate?


  • A.
  • B.
  • C.
  • D.

It is difficult to produce nuclear fusion because

  • A. The particles involved are too small to see
  • B. The high temperature needed has not been reached
  • C. The particles involved have the same charge
  • D. The particles involved are radioactive

Which of these can pass through a few centimetres of lead?

  • A. Alpha particles
  • B. Beta particles
  • C. Gamma rays
  • D. Ultraviolet light

Which of these radiations is least likely to pass through skin cells?

  • A. Alpha particles.
  • B. Beta particles.
  • C. Gamma rays.
  • D. X-rays.

The diagram represents nuclear fission Which of the particles shown in the diagram is a daughter nucleus?


  • A.
  • B.
  • C.
  • D.

In a nuclear power station, the chain reaction is controlled by

  • A. Absorbing neutrons.
  • B. Absorbing protons.
  • C. Producing neutrons.
  • D. Producing protons.

Which row of the table is correct for the isotopes of uranium ?

  • A. Atomic number is the same, mass number is different.
  • B. Atomic number is the same, mass number is the same.
  • C. Atomic number is different, mass number is the same
  • D. Atomic number is different, mass number is different