2.) What materials were used to filter water?

3.) How does geography, culture, and available materials affect how people clean water?

·    Test 2 (Horizontal pull): Pull the block across the desk (measuring the force needed to overcome friction).

·    Test 3 (Ramp pull): Pull the block up a low-angle ramp different groups can make different angle ramps (measuring the applied force needed).

·    Test 4 (Different surface on ramp): Tape cloth/sandpaper to the ramp and pull on the block (measure the force needed to friction in a new surface)

Group 2/5/8: Josue, Sambridi, Paola, Victoria, and Robert

Group 3/6/9: Yaiza, Elmer, Jorge, Danilo, Sienna

Group 4/7/1: Aryana, Gabriela, Trinity, Alexander, and Kyle

Group 5/8/2: Kevin, Paula, Paul, Kyrie, Makayla, and Marissa

Group 6/9/3: Illias, Jacobo, Uriel, Vanessa, and Ismael