Parachute e lead–acid battery: o que têm em comum

1. Passo 1. Parachute — é feito de — Silk. The canopy is silk.
2. Passo 2. Silk — é material para — Hot air balloon. The Montgolfier balloon was fabric lined with paper.
3. Passo 3. Hot air balloon — utiliza — Princípio de Arquimedes. Warm air is lighter than cold — Archimedes’ principle in the atmosphere.
4. Passo 4. Princípio de Arquimedes — é utilizado em — Hydrometer. A hydrometer floats: the buoyant force depends on the liquid's density, so how deep it sinks shows the density.
5. Passo 5. Hydrometer — é utilizado em — Lead–acid battery. A car battery's charge is checked with a hydrometer by the density of its acid.

Abrir Evothings