Which statement about the Yellowstone Caldera is true? A. The Yellowstone Caldera is the only caldera in the park resulting from a meteorite strike. B. The Yellowstone Caldera drags the hot spot with it when the plate beneath the caldera moves. C. The Yellowstone Caldera will eventually move farther away from the hot spot source. D. All the calderas in the park, including the Yellowstone caldera, formed at the same time.

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

What will a positive and a negative charge do if they are separated from each other?