# Nasa Wavelength

## Technology Teacher: Speaking in Phases

This article describes an indoor, game-type demonstration, incorporating physics (EM wave modulation), math (binary codes), space technology, and music to show how spacecraft put information into the radio signals they send back to Earth.

## Just Right: The Goldilocks Effect

In this introductory activity, students learn about perspective, range and resolution and explain how the optimal viewing zone varies with what it is they want to know.

## Design Challenge: What Factors Determine the Comfort of Air?

The purpose of this investigation is to understand how the amount of water vapor in the air at various temperatures affects the way the human body responds.

## Down to Earth: Binary Numbers

In this activity, students use the binary number system to transmit messages. Two flashlights are used to demonstrate how astronomy spacecraft to transmit images and other scientific data to Earth.

## Mars Imaginings - The Story

This activity focuses on how the search for life on Mars is portrayed in fiction and videos. Learners will consider depictions of Mars from science fiction books and video clips.

## Space Place: The Many-Eyed Earth Watcher

This article describes the multi-camera instrument (Multi-angle Imaging SpectroRadiometer or MISR) aboard the Terra Satellite; participants use information from the article to complete a crossword puzzle. A supplemental article entitled, "Clouds and Earth" is included.

## Decomposers Get Energy from Dead Things

This is a lesson where learners explore the process of decomposition and draw conclusions about the important role decomposers play in the flow of energy.

## GLOBE: What is Your Climate Classification

Students are introduced to the Köppen-Geiger climate classification system, which is used to identify world climate types based on annual and seasonal differences in temperature and precipitation. The lesson includes two activities with worksheets and handouts.

## The Colors of the Seasons

Using a color chart, students will make observations outside during each of the four seasons. During each session, they will try to find as many colors as possible and record what they see. As a class they will make charts describing the colors they find in each season.

## Launch Speed

This example shows how Newton's laws of motion apply to aircraft carriers and introduces the lift equation: the amount of lift depends on the air density, the wind velocity, and the surface area of the wings. The problems stress the importance of units of measure.