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This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.

In this exercise (Activity #2 on page), learners test their distance vision to evaluate their overall eyesight.

Build a hydrometer (measures the density of a liquid) using a pipet or eyedropper.

In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules!

Learners measure a bottle full of air, and then use a vacuum pump to remove the air. When they re-weigh the bottle, learners find the mass is about 0.8g less.

In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.

"What's in the Water" lets participants use tools to solve the mystery- what chemicals and compounds are in a sample of water?

In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.

This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).