Could a kid win a race against a penguin?

How do penguins typically move when they are in the water compared to when they are on land?

• They are slow swimmers and fast walkers.

• They are fast swimmers and slow waddlers.

• They are fast swimmers and fast runners.

• They are slow swimmers and slow waddlers.

When a person and an Emperor Penguin are on soft snow, why does the person tend to sink while the penguin, when scooting on its belly, does not?

• The penguin is much lighter than a person.

• The penguin's feathers create an air cushion.

• The penguin spreads its weight over a larger area.

• The person's boots are too small for the snow.

What happens to the pressure exerted by a penguin on the snow when it switches from walking to scooting on its belly?

• The pressure increases because its weight is concentrated.

• The pressure decreases because its weight is spread out.

• The pressure remains the same, but friction changes.

• The pressure increases due to increased speed.

Snowshoes, skis, and vehicles with large tires are designed to help people move on snow without sinking. What is the common scientific principle behind these inventions?

• They reduce the total weight of the person or vehicle.

• They increase the friction between the object and the snow.

• They concentrate the weight onto a smaller area.

• They distribute the weight over a larger surface area.