Why Do We Put Salt on Icy Sidewalks? | Winter Science | SciShow Kids

The video explores why salt is used on icy sidewalks through an experiment. The teacher and Squeaks set up an experiment with two cups of water, one with salt and one without, and place them in the freezer. After observing that the salted water doesn't freeze, the teacher explains that salt lowers the freezing point of water. The video concludes by discussing the environmental impact of salt and considering alternatives like sugar or sand.

Why do people put salt on sidewalks during winter?

• To keep the sidewalks warm

• To make the sidewalks look shiny

• To make the sidewalks taste better

• To prevent the sidewalks from getting icy

What was the purpose of using two cups of water in the experiment?

• To compare the effects of salt on freezing

• To see which cup holds more water

• To test different types of salt

• To observe the color change in water

What happens to water when it reaches its freezing point?

• It turns into a gas

• It changes color

• It becomes a solid called ice

• It evaporates

How does salt affect the freezing point of water?

• It makes water boil

• It has no effect

• It lowers the freezing point

• It raises the freezing point

What is a potential downside of using salt on sidewalks?

• It can cause sidewalks to melt

• It can harm aquatic life when washed into streams

• It can make sidewalks too warm

• It can make sidewalks slippery