文档介绍：National Aeronautics and Space Administration
aRdiation Math aRdiation
This collection of activities is based on a weekly series of
space science problems distributed to thousands of teachers during
the 2004-2008 school years. They were intended for students
looking for additional challenges in the math and physical science
curriculum in grades 6 through 12. The problems are designed to be
‘one-pagers’ consisting of a Student Page, and Teacher’s Answer
Key. pact form was deemed very popular by participating
teachers.
The topic for this collection is Radiation which tends to be
a very mysterious subject among students and adults. It shouldn’t
be. Living on the surface of Earth, we are bathed in a natural
background of radiation from many sources. Usually the term is
identified by the harmful sources (nuclear bombs and power plants),
and health risks that occur when too much radiation is absorbed,
such as from skin cancer and UV over-exposure, or medical X-rays,
CAT scans and cancer therapy. This book will make the student
familiar with the many forms of radiation, how it is measured, and
what different doses can lead to over time.
This booklet was created by the NASA Space Math
program
Dr. Sten Odenwald (NASA - Hinode)
Dr. Neil Zapp (Space Radiation and Analysis Group)
For more weekly classroom activities about astronomy and space
science, visit
Space Math
Table of Contents
Introduction……. …………………………….………………..………… i
Table of Contents……………………………………………………….. ii
How to Use this Resource…………………………………………….. iii
Alignment with Mathematics Topics and Standards…….……….. iv
An Introduction to Space Radiation………………………….……… 1
Unit Conversion Exercises……………………………………..……… 2
Background Radiation and Lifestyles………………………..……… 3
A Perspective on Radiation Dosages………………………...……… 4
Radon Gas in the Basemen