Steel joints often separate sections of concrete bridges. why? a. an increase in kinetic energy can cause the bridge to contract. b. a decrease in temperature can cause the materials to expand. c. thermal expansion can cause the materials to shrink. d. thermal expansion can cause the concrete to expand and crack.

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point