You're almost there! You've got the right idea, but there's a slight error in the wording. Here's how to get it right:

* Light travels slower in water than in glass. This is because water has a higher refractive index (n = 1.33) than glass (n = 1.5).

* Refractive index (n) is a measure of how much light bends as it passes from one medium to another. A higher refractive index means the light bends more, which indicates that the light is traveling slower in that medium.

Think of it like this:

* Water: Imagine walking on a beach, then stepping onto a muddy patch. You'll slow down, just like light does in water.

* Glass: Now imagine walking on a paved road. You can move faster than on the muddy patch, just like light travels faster in glass than in water.

Let me know if you have any more questions!