chapter 10 Transfer of heat energy (.1)

Question 1

what can the transfer of heat energy cause

Answer 1

it can cause objects/substances to expand/contract

Question 2

how does a substance expand
how does a substance contract

Answer 2

when it gains heat
when it is cooled

Question 3

Expansion and contraction in solids

Answer 3

-in hot weather, a metal railway gains heat & expands therefore, the tract can buckle
- expansion gaps that provide space for expansion

-in hot weather a concrete bridge expands and in cold weather a concrete bridge contracts, this may cause damage to the bridge

-expansion joints provide space for contraction
-expansion joints provide space for expandion