Which statement describes the use of control rods?

Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.

Control rods are lowered into the reactor to speed up the reaction by releasing neutrons.

Control rods are raised out of the reactor to slow down the reaction by absorbing neutrons.

Control rods are raised out of the reactor to speed up the reaction by releasing neutrons.

Question

Physics

Virginia

21 July, 20:30

Which statement describes the use of control rods?

Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.

Control rods are lowered into the reactor to speed up the reaction by releasing neutrons.

Control rods are raised out of the reactor to slow down the reaction by absorbing neutrons.

Control rods are raised out of the reactor to speed up the reaction by releasing neutrons.

+1

Answers (1)

Know the Answer?

Trey Ortiz · Answer 1

Control rods are rods, plates, or tubes containing a neutron absorbing material (material with high absorbtion cross-section for thermal neutron) such as boron, hafnium, cadmium, etc., used to control the power of a nuclear reactor.

so the statement that describe a control rod is:

Control rods are lowered into the reactor to slow down the reaction by absorbing neutrons.