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The goal of this experiment is to explore the differences between freshwater ice and sea ice. This experiment allows the students to make observations about the two types of ice.
Time Required: Two 50-minute class periods on two different days (one to prepare and freeze the ice cores, the other to add food coloring and observe its movement through or around the ice).
Arizona Science Standards
Strand 1: Inquiry Process
Concept 1: Observations, Questions, and Hypotheses
K-4: Observe, ask questions, and make predictions.
Concept 2: Scientific Testing (Investigating and Modeling)
K-4: Participate in planning and conducting investigations, and recording data.
Strand 4: Life Science
Concept 3: Organisms and Environments
K-4: Understand the relationships among various organisms and their environment.
Common Core Standards:
6-8.RST.3 Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.
Next Generation Standards:
5-LS2-1. Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment. (For this one, have students walk through the food webs in the Frozen Life companion story.)
Additional image from Wikimedia via Patrick Kelley.
Dr. Biology. (2014, July 15). Salt Water Ice Activity For Teachers. ASU - Ask A Biologist. Retrieved March 17, 2018 from https://askabiologist.asu.edu/activities/experiments/when-water-gets-icy/for-teachers
Dr. Biology. "Salt Water Ice Activity For Teachers". ASU - Ask A Biologist. 15 July, 2014. https://askabiologist.asu.edu/activities/experiments/when-water-gets-icy/for-teachers
Dr. Biology. "Salt Water Ice Activity For Teachers". ASU - Ask A Biologist. 15 Jul 2014. ASU - Ask A Biologist, Web. 17 Mar 2018. https://askabiologist.asu.edu/activities/experiments/when-water-gets-icy/for-teachers