Entries by Daphne Hanson

Examine types of water pollution and cleanup measures

Introduction: In this lab, we will examine types of water pollution and cleanup measures. Materials: Two small, clear containers (approx. 16 oz) Water Food coloring Oil Coffee filter and rubber band (or powdered detergent or corn meal) Procedure: Fill both containers about one third full of water. Contaminate each glass of water with a pollutant. […]

Unions and union representation

Unions have a long and storied place in the history of the U.S. workforce, and the subject has often been a heated topic of discussion at many bargaining and family dinner tables. Consider your experience with unions – whether through personal experience or as a witness to the stories and experiences of others. What are […]

A bungee jumping

1. 747 Tom D. spends his spare time running a bungee jumping service off the Henley Street bridge. He has a 100 ft long bungee cord (unstretched) that has a spring stiffness of 20 lb /ft. To test his bungee, he ties the bungee cord to the bridge railing, ties the other end to an […]

In this lab, we will examine the water cycle. Review the water cycle in this week’s reading before beginning.

Introduction: In this lab, we will examine the water cycle. Review the water cycle in this week’s reading before beginning. Remember, the scientific method involves observations and predictions (hypotheses). Beginning this lab with predictions will help you understand the water cycle better as well as reinforce the scientific method. Materials: Two clear zip top bags […]

How do bacteria and viruses make humans sick?

How do bacteria and viruses make humans sick? Why is the sky blue? Why do people grow old? Why does the moon revolve around Earth? The steps of the scientific method are the following: Observation Question Hypothesis Experimentation Data analysis Conclusion These steps are not written in stone and may vary depending on the branch […]

Lydia and Christine expected the types of microbes in the soil to change in response to the nitrogen and burning treatments because of the different aboveground plant communities and difference in soil nutrient

Lydia and Christine expected the types of microbes in the soil to change in response to the nitrogen and burning treatments because of the different aboveground plant communities and difference in soil nutrients. Soil microbial communities can change in multiple ways. First, the number of unique species can increase or decrease, measured as richness. The other way is how […]