Question

which of the following are examples of plasmas?
☐ ice cubes
☐ stars
☐ a gas fire
☐ auroras
☐ a neon sign
☐ a flashlight
retry

Explanation:

Plasma is a state of matter with ionized particles. Ice cubes are solid (not plasma). Stars consist of plasma (high - energy, ionized gas). A gas fire is mainly hot gas (not plasma - like ionized state). Auroras are caused by plasma interacting with Earth's magnetic field. Neon signs use plasma (neon gas is ionized to emit light). A flashlight uses a light - emitting diode or bulb with electric current, not plasma. So the examples of plasmas are stars, auroras, and a neon sign.

Answer:

stars, auroras, a neon sign