Match each term with its definition.

morpheme

phoneme

grammar

syntax

1)smallest units of sound that carry meaning on their own
2)smallest units of sound that make a difference in meaning
3)combined set of rules that govern use of a particular language
4)rules for forming speech sounds into phrases and sentences

Heat from the sun reaches earth to a. radiation b. convection c. conduction

Which of the following is the result of the nuclear weak force? the instability of large nuclei the repelling force between positively charged protons the structure of the atom certain types of nuclear decay

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.