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Week 10 · Keep It Cold

Friday

Test holder version 2
// A holder that keeps an ice cube from melting
⏱ about 20 min

Friday: Test Holder Version 2

Raven wraps a new cube in the same foil.

Rocket stuffs crumpled napkins all around it in the cup.

A plain cup races beside it again.

Nova peeks every ten minutes.

"Plain cup gone at 40. New holder still icy at 60!" Nova cheers.

VersionWhat it hadAll water at
Plain cupNothing40 minutes
Rocket version 1Foil wrap50 minutes
Rocket version 2Foil wrap and napkinsAfter 60 minutes

Compare honestly

Version 2 kept ice the longest.

The cube size and the spot stayed the same.

Only the napkin layer was new.

Your times may be different. Write what you see.

READ THE RESULTS
  • Read the question.
  • Tap your answer.
Which holder kept ice the longest?
What was new in version 2?
ORDER THE MELT TIMES, FIRST TO MELT FIRST
  • Tap a card.
  • Then tap its spot.
1Melted first
2Melted next
3Lasted longest
IdeaTrue or false?
The napkins helped slow the heat.?
The plain cup lasted the longest.?
WHY THIS EXERCISEA material that slows heat keeps ice frozen longer.
Try it
Add one new layer to your holder.
Race it against a plain cup.
Peek every 10 minutes.
Safety first
A grown-up handles the ice.
Nothing goes in your mouth.
Wipe up drips.

Layers add up

Version 1 had one layer: foil.

Version 2 had foil and napkins.

The napkins slowed the heat even more.

COMPARE THE HOLDERS
  • Read the question.
  • Tap your answer.
When was the plain cup all water?
Did version 2 beat version 1?
Your times are different from the crew. What do you do?
ResultTrue or false?
Version 2 used a bigger cube.?
The cubes sat in the same spot.?
Adding napkins was the only change.?
WHY THIS EXERCISEOne change at a time shows what helped.
OUR ICE WEEK
  • Tap a card.
  • Then tap its spot.
1Monday
2Tuesday
3Wednesday
4Thursday
5Friday

Your ice lasted longer. Cool work!

Tomorrow is Build Day.

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