Praxis 5442 middle Study guides, Class notes & Summaries

Praxis 5442 Middle School Practice Questions with Complete Solutions A book is at rest on a tabletop. A teacher asks students to sketch the forces exerted on the book. Which of the following student diagrams best depicts all the forces exerted on the book? For an object at rest, forces must be balanced. The student diagram correctly depicts the balanced forces acting on the book, the force of gravity directed downward, and the force exerted by the table directed upward. A certain spec...

Praxis 5442 Middle School Science Latest Verizon 100% Verified Absorbtion The transfer of energy from a wave to matter as the wave passed through it. Acceleration The rate at which velocity changes with time. Acceleration Formula acceleration = final velocity - initial velocity / time Alkali Metals The first column (group or family) on the periodic table (excluding hydrogen). Alkaline Earth Metals The second column (group or family) on the periodic table. Amplitude 1/2 the dis...

Praxis 5442 Middle School Science Latest Update Already Passed 1 calorie = ____ joules 4.184 joules A mole of gas the number of molecules in the gas expressed in terms of Avogadro's number acid compound that forms hydrogen ions (H+) in solution alkali metals (group 1) characteristics soft, most reactive metals, easily give away valence electrons, 1 valence electron Amperes the unit for measuring electrical current; the abbreviation is amp. Amplitude Height of a wave angul...

1. Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? a. It interprets an observation. b. It applies to a narrow range of phenomena. c. It summarizes the most recent work of a scientists. d. It provides an explanation for the results of many experiments. - ANS d. it provides an explanation for the results of many experiments.

Matter - ANSWER Anything that has mass and takes up space. John Dalton - ANSWER Proposed elements were made of atoms; this theory is the Atomic Theory of Matter. Sir Joseph John (J.J.) Thompson - ANSWER Discovered electrons; pictured electrons embedded with protons.

substance - ANSWER matter that has a uniform and definite composition mass - ANSWER A measure of the amount of matter in an object physical property - ANSWER of a substance is density density - ANSWER mass/volume physical properties of a substance - ANSWER color and odor, melting and boiling points, malleability and hardness

substance - ANS matter that has a uniform and definite composition mass - ANS A measure of the amount of matter in an object physical property - ANS of a substance is density density - ANS mass/volume physical properties of a substance - ANS color and odor, melting and boiling points, malleability and hardness

1. Which of the following characteristics is most important in demonstrating that a hypothesis should be called a theory? a. It interprets an observation. b. It applies to a narrow range of phenomena. c. It summarizes the most recent work of a scientists. d. It provides an explanation for the results of many experiments. d. it provides an explanation for the results of many experiments. A hypothesis is a tentative explanation for a set of observations further experiments are conducted to ...

Middle School Science Praxis 5442 Exam Study Guide. Matter - answerAnything that has mass and takes up space. John Dalton - answerProposed elements were made of atoms; this theory is the Atomic Theory of Matter. Sir Joseph John (J.J.) Thompson - answerDiscovered electrons; pictured electrons embedded with protons. Ernest Rutherford - answerAtoms have positive nucleus; electrons orbit in empty space. Sir James Chadwick - answerExistence of neutrons in the nucleus. Physical Property - ans...

Middle School Science Praxis 5442 Exam Study Guide. Substance - answermatter that has a uniform and definite composition mass - answerA measure of the amount of matter in an object physical property - answerof a substance is density density - answermass/volume physical properties of a substance - answercolor and odor, melting and boiling points, malleability and hardness chemical properties - answerCharacteristic that cannot be observed without altering the substance phases of matter -...