This is an activity about comet composition. Learners will explore the physical characteristics of comets by reaching into a series of boxes and feeling the materials and structures within. They will describe what they observe and speculate on comet... (View More) characteristics being modeled in each box, opening the discussion about the nature of these icy bodies and begin to compare them to other members of our solar system. (View Less)

This is an activity about modeling the effect of wind on a sandy surface. Learners will use trays of sand and straws to recreate surface features of images of Mars. Participants test their ideas about how some of the features on Mars might have been... (View More) produced. This is activity 4 of 9 in Mars and Earth: Science Learning Activities for After School. (View Less)

This is an activity about creating impacts on sandy surfaces. Learners will use trays of sand and a variety of solid objects to model the effects of "impactors" on the surface. This is activity 6 of 9 in Mars and Earth: Science Learning Activities... (View More) for After School. (View Less)

Learners will use trays of sand and cups of water to recreate surface features seen in images of Mars. This is activity 5 of 9 in Mars and Earth: Science Learning Activities for After School.