Kristin decides to do an experiment to determine which type of sock absorbs
the most sweat. Which of these describes her doing step fourof the inquiry
process?
A. Kristin measures the weight of five different kinds of socks before
and after she goes running.
O
B. Kristin wonders which of the five types of socks in her drawer
seems to be the most absorbent.
O
C. Kristin predicts that all-cotton socks will absorb the most sweat,
because she thinks cotton is very absorbent.
D. Kristin finds that socks made of a polyester-cotton blend weigh
0.05 ounce more after she runs in them.

Follow these directions and answer the questions. 1. set up the ripple tank as in previous investigations. 2. bend the rubber tube to form a "concave mirror" and place in the ripple tank. the water level must be below the top of the hose. 3. generate a few straight pulses with the dowel and observe the reflected waves. do the waves focus (come together) upon reflection? can you locate the place where the waves meet? 4. touch the water surface where the waves converged. what happens to the reflected wave? 5. move your finger twice that distance from the hose (2f = c of c, center of the curvature) and touch the water again. does the image (the reflected wave) appear in the same location (c of c)? you may have to experiment before you find the exact location. sometimes it is hard to visualize with the ripple tank because the waves move so quickly. likewise, it is impossible to "see" light waves because they have such small wavelengths and move at the speed of light. however, both are examples of transverse waves and behave in the same way when a parallel wave fronts hit a curved surface.

Awave that is traveling fast can be said to have a high a. frequency b. speed c. wavelength d. amplitude e. period f. none of these

Why does gravity have a lesser than grater effect on higher altitudes?