How Do Skiers Win Races?

How Do Skiers Win Races?

Assessment

Interactive Video

Science, Physical Ed

11th Grade - University

Hard

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Quizizz Content

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Alpine skiing is a competitive sport where even a tiny edge can make a difference. Skiers use wax to minimize friction between their skis and the snow. The choice of wax depends on various factors like temperature and snow wetness. Wet snow requires softer wax with fluorocarbons, while dry snow needs harder wax with hydrocarbons. There is no universal wax; skiers must select and layer waxes based on specific conditions. Understanding wax physics can be crucial in races decided by hundredths of a second.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is ski wax crucial for Alpine skiers?

It makes the skis more durable.

It adds weight to the skis.

It changes the color of the skis.

It reduces friction between skis and snow.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the term 'wetness' refer to in the context of snow?

The color of the snow.

The ratio of snow crystals to liquid water.

The temperature of the snow.

The thickness of the snow layer.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does wet snow affect skiing performance?

It causes skis to become lighter.

It makes skis glide faster.

It has no effect on skiing performance.

It creates a suction effect that slows skis down.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of wax is used for dry snow conditions?

Wax with a lower melting point.

Wax with added color pigments.

Wax with more fluorocarbons.

Wax with a higher proportion of hydrocarbons.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is there no single 'miracle wax' for all conditions?

Because waxes are only effective for a short time.

Because skiers prefer to use different brands.

Because conditions vary greatly and require different formulations.

Because waxes are too expensive.