Unit 15 Part II

Multiple Choice

When stringing telephone lines between poles in the summer, it is advisable to allow the lines to

• sag.

• be taut.

• be close to the ground.

• allow ample space for birds.

Multiple Choice

When a sample of 0 $$\degree C$$   water is heated, it first

• expands.

• contracts.

• remains unchanged.

• Not enough information.

Multiple Choice

When a sample of 4 $$\degree C$$   water is cooled, it

• expands.

• contracts.

• remains unchanged.

• Not enough information.