Why would someone be detained at Ellis Island?

Why would someone be detained at Ellis Island? About one percent were classified and detained for political or legal reasons, including suspected criminals and anarchists. About one percent were detained if suspected of a “loath-some or a dangerous contagious disease.” Immigrants with curable diseases were sent to medical facilities on Ellis Island. What accommodations were […]

Does social stratification change?

Does social stratification change? Summary. Stratification systems are either closed, meaning they allow little change in social position, or open, meaning they allow movement and interaction between the layers. A caste system is one in which social standing is based on ascribed status or birth. How is social stratification related to social? Social class is […]

What isotopes are used in smoke alarms?

What isotopes are used in smoke alarms? Am-241, with a half-life of 432 years, was the first americium isotope to be isolated, and is the one used today in most domestic smoke detectors. Am-241 decays by emitting alpha particles and gamma radiation to become neptunium-237. Is americium-241 a radioisotope? Americium-241 (241Am, Am-241) is an isotope […]

Can you freeze dry things at home?

Can you freeze dry things at home? Freeze drying works great for fruits and vegetables, but unlike other options, it also perfectly preserves meat, fish, dairy, eggs, ice cream, and even fully-cooked meals. Not only will the food you freeze dry at home look and taste better than store-bought freeze-dried food, it’s much less expensive! […]

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