Join Jill and Liz as they answer the questions “Why does cool air come out of a person's mouth when they blow (like to cool off hot soup), but warm air comes out when a person goes HAAAAAAH (think warming your hands on a cold day)?” and “Do hummingbirds really hum?” We also have a fact about gardens and a book recommendation you are sure to love! To submit your own question, go to KDL.org/Stump. We can’t wait to hear from you!
Regarding breathing...
https://www.youtube.com/watch?v=4HfcDpxreJE
"heat." Britannica School, Encyclopædia Britannica, 16 Nov. 2021. school.eb.com/levels/high/article/heat/39732. Accessed 13 Mar. 2025.
https://www.physicsclassroom.com/Class/thermalP/u18l1d.cfm
https://www.sciencelearn.org.nz/resources/750-heat-energy/
Regarding hummingbirds...
"hummingbird." Britannica School, Encyclopædia Britannica, 2 Feb. 2025. school.eb.com/levels/middle/article/hummingbird/353273. Accessed 13 Feb. 2025.
https://www.audubon.org/news/get-know-bee-hummingbird-worlds-smallest-bird
https://www.audubon.org/magazine/scientists-discover-worlds-largest-hummingbird-hiding-plain-sight
https://en.wikipedia.org/wiki/Hummingbird
https://goldengatebirdalliance.org/blog-posts/bird-tongues/
https://www.hummingbirdspot.com/anatomy
https://nationalzoo.si.edu/migratory-birds/hummingbirds
https://sorama.eu/how-hummingbirds-hum/
Behold the Hummingbird by Suzanne Slade: https://kdl.bibliocommons.com/v2/record/S174C1127495
Hummingbird chirps: https://www.youtube.com/watch?v=43PRVtGk2To
Hummingbird wing flaps: https://youtu.be/x5Wjz23EasA
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