Vernier Software and Technology
Vernier Software & Technology

UV Investigations

Figure from experiment 21 from Investigating Environmental Science through Inquiry

Introduction

The stratosphere contains an ozone layer that shields the surface of Earth from much of the ultraviolet radiation coming form the sun. The depletion of the ozone layer is subject of much concern.

The ultraviolet band is broken into three types referred to as UVA (with wavelengths of 320 to 400 nm), UVB (280 to 320 nm), and UVC (200 to 280 nm). The most harmful of these three, UVC radiation, is absorbed by oxygen and ozone in the atmosphere and does not reach the Earth’s surface. The ozone layer absorbs much, but not all, incoming UVB radiation. Some UVB radiation reaches the surface of Earth. UVA radiation is not affected by the ozone layer, and most reaches the surface of Earth.

UVB radiation is responsible for many skin problems such as sunburns and several forms of skin cancer. UVA radiation is deep-penetrating and causes tanning, wrinkles, and some forms of skin cancer. Scientists are also concerned that increased UV levels will disrupt ecosystems.

Objectives

In the Preliminary Activity, you will gain experience using a UVB Sensor and learn UV intensity measuring technique as you determine outdoor UVB intensity at your location.

After completing the Preliminary Activity, you will first use reference sources to find out more about ultraviolet radiation and ozone depletion before you choose and investigate a researchable question.

Sensors and Equipment

This investigation features the following Vernier sensors and equipment.

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Investigating Environmental Science through Inquiry »

Investigation 21 from Investigating Environmental Science through Inquiry Lab Book

<em>Investigating Environmental Science through Inquiry</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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