Some thermal containers have layers of materials to keep drinks cold for as long as possible. Which design would help keep ice frozen for the longest period? A. Inner core of steel, no air gap, outer layer of plastic

B. Inner core of steel, air gap, outler layer of glass

C. Inner core of steel, no air gap, outer layer of plastic

D. Inner core of glass, air gap, outer layer of glass

I know A. and C. are the same, but those are my options.

scientific laws are the result of testing theories and proving them to be facts.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.