1. Which methods are most accurate in making forecasts? Why do you think so?

2. Imagine this is the current weather in your area: It's 64°F and overcast. There is a storm 400 miles north, moving south toward you at a speed of 260 miles per day. A warm front is also moving into the area. Predict what the weather will be like three days from today.

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .