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Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.

In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

In this activity, learners explore in what ways the shape of the land and the pull of gravity influence how water moves over Earth.

In this activity about humans and space travel (page 1 of PDF), learners compare and contrast the behavior of a water-filled plastic bag, both outside and inside of a container of water.

“Exploring Earth: Rising Sea” is a hands-on activity demonstrating ways to use topographical mapping techniques to track changes in sea level. The activity is connected to current NASA research.

In this activity, learners create a "mini sky" in a glass of water in a dark room.

In this activity, learners observe tide pool animals in a touch tank to consider how they survive.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.