WONDER #494: Why Is Ice Slippery?

Question 1 of 3

What makes ice slippery?

  1. water
  2. oil
  3. grease
  4. air

Question 2 of 3

What force generates heat whenever two objects slide against each other?

  1. gravity
  2. momentum
  3. friction
  4. infinity

Question 3 of 3

One theory of why ice is slippery is that its outermost layer never turns to a what?

  1. gas
  2. solid
  3. liquid
  4. all of the above

Check your answers online at https://www.wonderopolis.org/wonder/why-is-ice-slippery.