Science Education Standards:

Earth and Space Science -- Content Standard D

Changes in Earth and Sky:

• The surface of the Earth changes. Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions and earthquakes.

Short Description: Children model ancient lunar impacts using water balloons. By measuring the diameter of the crater area, children discover that the Moon's largest impact basins were created by huge asteroids!