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Sound travels fast, but light travels even faster.

Sound travels fast, but light travels even faster.

In a thunderstorm you see the lightning first, then hear the thunder. That's because light zooms to your eyes faster than sound reaches your ears.

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Fast and slow are opposites — a cheetah is fast, a snail is slow. Fast and slow are opposites — a cheetah is fast, a snail is slow. A sloth is one of the slowest animals in the world. A sloth is one of the slowest animals in the world. A rabbit hops fast, but a turtle walks slow. A rabbit hops fast, but a turtle walks slow. A race car is fast, but a bicycle is slower. A race car is fast, but a bicycle is slower. The peregrine falcon is the fastest animal when it dives from the sky. The peregrine falcon is the fastest animal when it dives from the sky.