AccelePrep for the ACT Test 2nd Edition Student Text

C HAPTER 11 | H YPER P REP S CIENCE • 205

The strategy for correctly reading graphs and charts is very much like the strategy for reading passages on the Reading Test. Start with the basic parts: look for the main point of the graph, which is sometimes summarized by the main heading or title above the graph. Next, glance over the general content of the graphs, and look for answers to questions such as: “What do the various categories mean?” and “What units are used?” Do NOT try to memorize the presented data—rather, take note of the locations of the represented items. Bracket any material of which the •‹‰‹ϐ‹…ƒ…‡ ƒ› ‘– „‡ ‹‹–‹ƒŽŽ›…Ž‡ƒ”Ǥ ‡‡„‡” –Šƒ– –Š‡ ƒ……‘’ƒ›‹‰ items will indicate the necessary relevant information. The kinetic energy of an object with mass m (measured in grams) after a fall from a height h (measured in centimeters) was recorded for different heights. A graph was made representing the kinetic energy versus height.

GRAPH READING STRATEGY

STRATEGY ALERT Preview graphs, noting headings, labels, and units. Use this previewmethod for all graph types, including pie charts.

Examples:

1. What would be the approximate kinetic energy (in g cm /s 2 2 : ) of an object of mass m ‹ˆ ‹– ™‡”‡ †”‘’’‡† ˆ”‘ ƒ Š‡‹‰Š– ‘ˆ ͶǤͷ…ǫ Ǥ ԚͶǤͷ Ǥ ԚͻǤͲ Ǥ Ͷͷ D. 90 2. It is discovered that if the experiment is repeated for an object with twice the mass, the kinetic energy obtained for every height is doubled. The slope of the new set of experiments can be obtained by

Explanations for the example questions are included later in the chapter. Circle your answers now. Later when you reach the explanations at the end of the section, come back and check to make sure you answered the questions correctly.

doing what to the old slope? F. Multiplying by 2 G. Dividing by 2 H. Squaring J. Taking the square root