Worksheetsgrade 6 , con 4, lesson 6
Total questions: 10
Worksheet time: 5mins
Metallic parts of a bridge........... in different temperatures.
contract only
never expand or contract
expand only
expand and contract
When the kinetic energy of liquids decreases, they may
expand.
contract.
evaporate.
Railroad tracks are made up of
glass.
coal.
plastic.
iron.
Engineers leave........... Between railroad tracks
small spaces
very large spaces
large spaces
no spaces
Materials by their temperatures.
expand – decreasing
contract - decreasing
contract – increasing
melt – decreasing
Put (✓) or (X) : Engineers use expansion joints to keep bridges safe.
True
False
Put (✓) or (X) : Temperature increases in hot weather causing contraction of materials.
True
False
Put (✓) or (X) : Railroad tracks are made up of iron.
True
False
Put (✓) or (X) : No spaces are left between railroad tracks.
True
False
Put (✓) or (X) : Without leaving spaces between railroad tracks, train accidents may occur.
True
False
