Walrus pups are able to swim at birth and weigh between 100 and 150 pounds. Most are only children (twin births are rare), and they stay with their mothers for two years. Eventually, their small young tusks will grow up to three feet long.
Definition of nuclear for Students. 1  1 : of, relating to, or being a nucleus (as of a cell) 2  2 : of or relating to the nucleus of the atom Fission is a nuclear reaction. 3  3 : produced by a nuclear reaction nuclear energy.  4 : of, relating to, or being a weapon whose destructive power comes from an uncontrolled nuclear reaction.
What is nuclear science? Nuclear science is the study of the atomic world. In nuclear science, the word 'nuclear' means 'of or relating to or constituting the nucleus of an atom'. Atoms are the fundamental constituents of everything around us, and we ourselves are entirely composed of them. Nuclear science is crucial to understanding our universe, our world and ourselves at the atomic level. If we can understand how atoms get together, interact, or can be best combined with other atoms, new, more efficient materials and drugs can be developed. ANSTO and nuclear science