How are the ingredients in a mixture of iron filings and sand affected by being combined? answer choices

1. Both the iron filings and the sand maintain their original physical properties when combined.

2. The physical properties of the sand change but those of the iron filings do not.

3. Neither the iron filings nor the sand maintain their original physical properties when combined.

4. The physical properties of the iron filings change but those of the sand do not.

b

Explanation:

b

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.