The purpose of this assessment probe is to elicit students’ ideas about light and the Moon. The probe is designed to find out what students think is the source of a full Moon’s light.

The purpose of this assessment probe is to elicit students’ ideas about the distribution of land, oceans, freshwater, and ice. The probe is designed to find out whether students realize that most of the Earth is covered by oceans.

The purpose of this assessment probe is to elicit students’ ideas about an important fossil fuel used by humans. The probe is designed to reveal how students trace oil back to its original source of material.

The purpose of this assessment probe is to elicit students’ ideas about global warming. The probe is designed to find out what students think contributes to global warming.

The purpose of this assessment probe is to elicit students’ ideas about the effect of solar radiation on Earth’s temperature. The probe is designed to find out whether students realize the Earth continues to cool after sundown and up to sunrise until there is sufficient radiation to begin warming the Earth.

The purpose of this assessment probe is to elicit students’ ideas about the digestive system. The probe is designed to find out whether students realize a main function of the digestive system is to break food down into molecules that can be used by cells.

The purpose of this assessment probe is to elicit students’ ideas about infectious disease. The probe is designed to find out whether students use the germ theory to explain what causes an infectious disease like the common cold.

The purpose of this assessment probe is to elicit students’ ideas about natural selection. The probe is designed to find out how students interpret the commonly used phrase “survival of the fittest.”

The purpose of this assessment probe is to elicit students’ ideas about biological adaptation. The probe is designed to find out if students think animals intentionally adapt to a change in their environment.

The purpose of this assessment probe is to elicit students’ ideas about food, transformation of matter, growth and development, conservation of mass, and systems. The concepts underlying this probe are complex. It is not important that students know exactly what happens to the mass of an egg and why. Rather, this probe is used as an interesting context to draw out their ideas about several interrelated concepts in science.