Why are K-W-L charts useful? They provide visual clues.
They give you a list of textual features to look for.
They help you contextualize new knowledge.
They define organizational structures for learning.

c)as speed changes, wavelength and frequency change.

everything changes!

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

i think the answer is tomato juice? not entirely sure though