Understanding Igloos and Insulation

What is the primary reason snow can keep you warm despite being cold?

• Snow is a good conductor of heat.

• Snow reflects sunlight effectively.

• Snow traps air, which acts as an insulator.

• Snow absorbs body heat quickly.

How long have the Inuit managed to live in the Arctic?

• About 500 years

• About 10,000 years

• About 5,000 years

• About 1,000 years

Which of the following is NOT a method of heat transfer?

• Reflection

• Radiation

• Conduction

• Convection

What characteristic of otter fur makes it an excellent insulator?

• Its color

• Its spiky texture

• Its density

• Its length

Why is solid ice not ideal for building igloos?

• It is too slippery.

• It is too heavy to lift.

• It melts too quickly.

• It is not a good insulator.

What is the shape of a real igloo when sliced in half?

• A perfect circle

• A catenary

• A flat-bottomed half-sphere

• A triangle

How does the design of an igloo help in temperature regulation?

• It has a flat roof to trap heat.

• It uses thick walls to block wind.

• It has different levels to separate hot and cold air.

• It is painted black to absorb heat.

What happens to the innermost layer of an igloo's walls over time?

• It melts slightly, strengthening the barrier.

• It becomes thicker.

• It changes color.

• It becomes weaker.

What is the effect of having more people inside an igloo?

• It becomes warmer faster.

• It becomes colder.

• It becomes more humid.

• It becomes unstable.

What is the primary function of the catenary shape in igloos?

• To make it aesthetically pleasing

• To allow more light inside

• To make it easier to build

• To distribute weight evenly