In Experiment 5, two different filtration techniques were used: (1) vacuum filtration and (2) hot gravity filtration. Explain the purposes of each method. Specifically, emphasize and contrast the goals of each technique.

How does convection affect our atmosphere? our layers of earth? our oceans?

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?