Plz answer?

sample papers

1 Answer
Oct 17, 2016

Answer:

B)

Explanation:

To muddy the waters a little(!!)

image.prntscr.com

from here:

https://www.reference.com/science/igloo-keep-people-warm-1d290fe9e02c6cfc

Generally, speaking, saying ice has high or low conductivity is placing it on some kinda absolute scale, which makes no sense.

But seems clear the answer they want is B, as in it has a sufficiently low thermal conductivity.

Here's a list from hyperphysics..... materials by thermal conductivity:

image.prntscr.com

http://hyperphysics.phy-astr.gsu.edu/hbase/tables/thrcn.html

Look at where snow is on the hyperphysics list. So an igloo is more like a bivouac, really, with a hard outer shell.