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7 fact-checked facts about curling and the curl of the stone, each with the reason behind it. 5 more are in today's round and join this page after it closes.

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The basics

What do curlers use to sweep in front of a moving stone?

AnswerBrooms or brushes

Players sweep with brooms or brushes to influence how far and how straight the stone travels.

What is the circular target in curling called?

AnswerThe house

The house is the set of rings at each end of the ice, with the center called the button.

Going deeper

In curling, what is the last stone of an end called?

AnswerThe hammer

The hammer is a big advantage because the team throwing it gets the final shot of the end.

A curling stone rotating clockwise, seen from above, will curl toward which side?

AnswerRight

Curling stones curl in the direction they rotate, so a clockwise turn bends the path to the right.

Why does sweeping help a curling stone travel farther?

AnswerIt briefly warms and smooths the ice, reducing friction

Sweeping slightly warms the ice surface, reducing friction so the stone slides farther and curls less.

Expert level

Many top curling stones are made from granite from which Scottish island?

AnswerAilsa Craig

Ailsa Craig, in the Firth of Clyde, is famous for granite used in curling stones.

How many stones does each team deliver in one end?

Answer8

Each of the four players throws two stones, so a team delivers eight per end.

Know these cold?Today's round is five questions like these, 20 seconds each. Your streak and level follow you to every arena.Play today's round