Q: What travels at a rate of 300,000 kilometers per second, or nearly instantaneously?


Read this paragraph and choose the correct option from the provided answers:

The speed of sound in air is approximately , where is the temperature of the air in Celsius. The speed of light is 300,000 km/sec, which means it travels from one place to another on Earth more or less instantaneously. Let’s say on a cool night (air temperature Celsius) you see lightning flash and then hear the thunder rumble five seconds later. How far away (in km) did the lightning strike?.

 Choices:

- air

- sound

- gravity

- light


A:
light