form for crater experiment

From: Marc Siegel <>
Subject: form for crater experiment
Date: Mon, 29 Dec 1997 13:52:52 -0800 (PST)

Regarding my previous post about a crater experiment, Alice asked

> i am doing a k-4 workshop and will use this with the teachers
> Did you have a particular form that you used for their data?

I can't recall if I got a form from the activity boosk or not.  The form looked something like this:

Low height
Trial 1    crater diameter ______   ejecta diameter ______
Trial 2    crater diameter ______   ejecta diameter ______
Trial 3    crater diameter ______   ejecta diameter ______

I had similar sets of blanks for medium and high heights.
We defined heights as 
* low=1 foot
* medium = 1 yard
* high = stand on tippytoes and drop from as high as you can reach

After students collected their data in teams, we wrote all of their
results on the blackboard.

The ideas for this activity came from two places: 
1) A book on the moon from NASA. You can download it from this URL:
(This is all one URL with no spaces)

2) Live From MArs Teachers guide, Activity 3.2

I hope this is helpful.
Yours, Marc