Science Praxis Test 3

The scientific name for a domestic cat is Felis catus. Which of the following classification levels is indicated by the first part of the scientific name? A.Order B.Genus C.Family D.Kingdom

B. Genus In binomial nomenclature, the first term refers to the genus, and the genus and specific epithet together define the species. Felis is the name of the genus that includes some small and medium cat species, including the domestic cat, Felis catus.

Which of the following demonstrations provides the best opportunity for students to gain an understanding of why the Sun appears larger than other stars, even though many stars are actually larger than the Sun? A.Positioning two lit bulbs of the same size on opposite sides of an observer but at the same distance from the observer B.Positioning two lit bulbs of the same size at different distances from an observer C.Positioning a large lit bulb and a small lit bulb at the same distance from an observer D.Positioning a large lit bulb close to an observer and a small lit bulb far from the same observer

B. Positioning two lit bulbs of the same size at different distances from an observer The bulb positioned closer to the observer will appear larger than the bulb positioned farther away, even though the two bulbs are the same size. Similarly, of two stars that have approximately the same size and temperature, the star that is closer to Earth will appear to be the larger star.

In an investigation of the rusting process, students soaked a sample of steel wool in vinegar for approximately 1 minute. After removing the steel wool from the vinegar, the students squeezed it and blotted it with a paper towel. The students then wrapped the steel wool around the bulb of a thermometer and placed the steel wool and thermometer together in a covered beaker to allow the rusting process to occur. The students observed that the temperature reading of the thermometer gradually increased. Which of the following conclusions is best supported by the students' observation? A. A reaction occurred in which energy was created. B. A reaction occurred in which energy was destroyed. C. A reaction occurred in which energy was released. D. No reaction occurred.

C. A reaction occurred in which energy was released. The observed temperature increase best supports the conclusion that energy was released into the surroundings. Soaking the steel wool in vinegar removed a protective coating on the steel wool, resulting in the exposure of iron in the steel wool to oxygen in the air. The reaction of iron with oxygen in the presence of water produces rust, which is a process that releases energy in the form of heat.

Bread molds belong to which of the following groups of organisms? A. Bacteria B. Animalia C. Plantae D. Fungi

D. Fungi