Which of the following scales ranks earthquakes based on magnitude?

Which of the following organisms appeared in the fossil record first?

You read an article about a tornado that formed near Dallas. Which branch of the Earth sciences does this fall under?

Which of the following is an observation that astronomers used to develop the Big Bang and Expanding Universe theories?

Mothers Against Drunk Drivers, Moonies, the pro-life organization, and the Black Panthers are all example of _______.

An initiation becomes a form of hazing when:

Cohesiveness can be measured by ___________.

Le Bon’s theory, convergence theory, and emergent-norm theory are all theories of ________.

Conflict is to the ____ stage as increased cohesion is to the ____ stage.

A 30 kg child plays on a swing having support ropes that are 2.7 m long. A friend pulls her back until the ropes are from the vertical and releases her from rest. What is the potential energy, in joules, for the child at the release point? Let the equilibrium point be zero potential energy. Round to three significant figures.