Part A Your presentation should make a convincing argument that human activity is the major cause of
climate change. Your presentation should answer some of these questions:
• What is climate?
• How is Earth's climate changing?
• What are the natural and human factors that affect climate?
• How do scientists know that human activity is the major force behind climate change?
• What evidence do scientists have that climate is changing?
Write down two additional questions you have about climate change that will help you make this
argument in vour presentation.

In what direction does the medium move relative to the direction of the wave? explain.

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram