Ask Dr. Universe

Why Are Rocks Gray? With Dr. Cooper

Clip: Special | 2m 30s | Video has closed captioning.

In this Quick Bit from Ask Dr. Universe: Meet The Scientists, geophysicist Dr. Catherine M. Cooper answer "why are rocks gray?" from Sylvia, age 9, in Spokane, Washington. Do you have a science question of your own? Send it to Dr. Universe at!

Aired: 12/22/21

Rating: NR

Problems Playing Video? | Closed Captioning

Ask Dr. Universe is a local public television program presented by NWPB.