Our motivation for this article is for students to realize that opportunities for discovery are all around them. Discoveries that can still puzzle present day researchers. Here we explore an observation by a middle school student concerning the production of what appears to be water-like “ripples” produced in aluminum foil when placed between two colliding spheres. We both applaud and explore the student’s reasoning that the ripples were formed in a melted aluminum pool.

1.
Smashing! Steel Sphere Demo Kit
, Educational Innovations Inc., https://www.teachersource.com/product/smashing-steel-sphere-demo-kit/energy.
2.
A.
Worthington
,
A Study of Splashes
(
The Macmillan Co.
,
New York
,
1963
), pp.
119
120
.
4.
Loren M.
Winters
, “
High-speed photography with computer control
,”
Phys. Teach.
29
,
356
(
Sept.
1991
).
5.
V. F.
Nesterenko
,
Dynamics of Heterogeneous Materials
(
Springer-Verlag
,
New York
,
2001
).
6.
Vitali F.
Nesterenko
,
Po-Hsun
Chiu
,
Pedro Franco
Navarro
,
Andrew
Higgins
,
Matthew
Serge
, and
David J.
Benson
, “Influence of micro/mesostructure on instability mechanisms in collapsing thick walled cylinders,”
Keynote lecture, Plasticity, Damage & Fracture
2017
,
Puerto Vallarta, Mexico
(
Jan.
3-9,
2017
).
7.
K. L.
Olney
,
P.-H.
Chiu
,
M. S. Ribero
Vairo
,
A.
Higgins
,
M.
Serge
,
D. J.
Benson
, and
V. F.
Nesterenko
, “
Influence of mesoscale properties on the mechanisms of plastic strain accommodation in plane strain dynamic deformation of concentric Ni-Al laminates
,”
J. Appl. Phys.
117
,
044302
(
2015
).
8.
Mark
Miodownik
,
Stuff Matters
(
Houghton Mifflin Harcourt
,
New York
,
2014
), p.
23
.
9.
Ingnition Temperature of Paper, The Physics Factbook
, http://hypertextbook.com/facts/2003/LewisChung.shtml.
10.
Melting Temperatures of Some Common Metals and Alloys, The Engineering Toolbox
, http://www.engineeringtoolbox.com/melting-temperature-metals-d_860.html.
12.
Giant Newton’s Cradle
, http://www.giantnewtonscradle.com/.
13.
Specific Heats for Metals, The Engineering Toolbox
, http://www.engineeringtoolbox.com/specific-heat-metals-d_152.html (specific heat of Al).
15.
K. C.
Cole
,
Sympathetic Vibrations – Reflections On Physics as a Way of Life
(
William Morrow & Company
,
New York
,
1985
), p.
230
.
16.
H.
Czerski
,
Storm in a Teacup – The Physics of Everyday Life
(
W.W. Norton & Company
,
New York
,
2016
), p.
145
.
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