In this activity, students will construct models of the arrangement of water molecules in the three physical states. Students will understand that matter can be found in three forms or phases (solid, liquid, and gas).
Students brainstorm what the living conditions during the period known as the Little Ice Age (AD 1350–1850) might have been like. Then students study information about lifestyles, the economy, crop yields, and human and livestock mortality during the Little Ice Age. They compare and discuss what they have learned.
Students identify sunspots on images of the Sun, discovering that the number, location, and size of spots are not always the same. During the first part of the activity, students make a graph that shows how the number of sunspots has changed over the past 30 years, discovering that there is a regular pattern to the number of sunspots (the 11-year sunspot cycle).
Systems thinking is an important concept across the Earth sciences. In this game, students either are a part of a system or serve as scientists tasked with observing and making sense of the system moving in front of them.
Students will use soda to explore how carbon dioxide is able to dissolve into liquid. They will learn about Henry's law, which describes how the solubility of gas into liquids is dependent on temperature, and develop hypotheses about how the amount of carbon dioxide in the atmosphere, a greenhouse gas, is affected by rising atmospheric and oceanic temperatures.