In the Artic- Insulators

What happens to Arnold's hot cocoa when he sits by the open window in the cafeteria?

• It gets hotter.

• It stays the same temperature.

• It gets colder.

• It turns into ice.

Why does Liz become sluggish and cold in the Arctic environment?

• She is sick.

• She is cold-blooded and needs external heat.

• She forgot her jacket.

• She is hibernating.

How does heat primarily escape from a hot mug of cocoa into the surrounding air?

• Through the metal mug by conduction.

• Out the top by convection.

• Both out the top and through the metal mug.

• By radiation only.

What was the primary purpose of placing hot water bottles on the bus engine?

• To melt the ice around the engine.

• To transfer heat to the engine to help it start.

• To provide a comfortable resting place for the bottles.

• To prevent the engine from overheating.

Why did Arnold stuff paper into his jacket?

• To make his jacket more fashionable.

• To slow down the movement of heat away from his body.

• To absorb moisture from the snow.

• To make his jacket heavier for better stability.

What was the heat source the children found themselves in after escaping the polar bear?

• A volcanic vent.

• A giant bonfire.

• A hair follicle.

• A hot spring.

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What is the primary way a polar bear's fur helps it stay warm in cold environments?

• It generates its own heat through chemical reactions.

• It traps a layer of air close to the bear's body, preventing heat loss.

• It absorbs sunlight and converts it directly into warmth.

• It changes color to reflect cold away from its skin.

What is the main characteristic of polar bear fur that provides insulation?

• Its dark color absorbs heat.

• Its smooth texture reduces friction with cold air.

• Its hollow and tangled structure traps air.

• Its ability to shed water quickly.

How do walruses manage to swim in freezing cold water without getting too cold?

• They constantly move to generate body heat.

• They have a thick layer of blubber that insulates their bodies.

• Their skin is naturally resistant to cold temperatures.

• They have specialized organs that warm their blood.