Instructional+Resources+by+Standard


 * //8th Grade Science//**


 * //Power Standards//**


 * MOTION**
 * 1.c || Know how to solve problems involving distance, time, and average speed. ||
 * 1.e || Know changes in velocity may be due to changes in speed, direction, or both. ||
 * 1.f || Know how to interpret graphs of position versus time and graphs of speed versus time for motion in a single direction. ||


 * FORCES**
 * 2.b || Know when an object is subject to two or more forces at once, the result is the cumulative effect of all the forces. ||
 * 2.d || Know how to identify separately the two or more forces that are acting on a single static object, including gravity, elastic forces due to tension or compression in matter, and friction. ||
 * 2.e || Know that when the forces on an object are unbalanced, the object will change its velocity (that is, it will speed up, slow down, or change direction). ||
 * 2.f || Know the greater the mass of an object, the more force is needed to achieve the same rate of change in motion. ||


 * STRUCTURE OF MATTER**
 * 3.a || Know the structure of the atom and know it is composed of protons, neutrons, and electrons. ||
 * 3.b || Know that compounds are formed by combining two or more different elements and that compounds have properties that are different from their constituent elements. ||
 * 3.e || Know that in solids the atoms are closely locked in position and can only vibrate; in liquids the atoms and molecules are more loosely connected and can collide with and move past one another; and in gases the atoms and molecules are free to move independently, colliding frequently. ||


 * EARTH IN THE SOLAR SYSTEM (EARTH SCIENCE)**
 * 4.b || Know that the Sun is one of many stars in the Milky Way galaxy and that stars may differ in size, temperature, and color.  ||


 * REACTIONS**
 * 5.b || Know the idea of atoms explains the conservation of matter: In chemical reactions the number of atoms stays the same no matter how they are arranged, so their total mass stays the same. ||
 * 5.d || Know physical processes include freezing and boiling, in which a material changes form with no chemical reaction. ||


 * CHEMISTRY OF LIVING SYSTEMS (LIFE SCIENCE)**
 * 6.b || Know that living organisms are made of molecules consisting largely of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. ||


 * PERIODIC TABLE**
 * 7.a || Know how to identify regions corresponding to metals, nonmetals, and inert gases. ||
 * 7.b || Know each element has a specific number of protons in the nucleus (the atomic number) and each isotope of the element has a different but specific number of neutrons in the nucleus. ||
 * 7.c || Know <span style="font-family: Arial,Arial;">substances can be classified by their properties, including their melting temperature, density, hardness, and thermal and electrical conductivity. ||


 * DENSITY AND BUOYANCY**


 * 8.b || Know <span style="font-family: Arial,Arial;">how to calculate the density of substances (regular and irregular solids and liquids) from measurements of mass and volume. ||
 * 8.c || Know <span style="font-family: Arial,Arial;">the buoyant force on an object in a fluid is an upward force equal to the weight of the fluid the object has displaced. ||


 * INVESTIGATION AND EXPERIMENTATION**


 * 9.a || Plan and conduct a scientific investigation to test a hypothesis. ||
 * 9.b || Evaluate the accuracy and reproducibility of data. ||
 * 9.c || Distinguish between variable and controlled parameters in a test. ||
 * 9.d || Recognize the slope of the linear graph as the constant in the relationship y=kx and apply this principle in interpreting graphs constructed from data. ||
 * 9.e || Construct appropriate graphs from data and develop quantitative statements about the relationships between variables. ||
 * 9.f || Apply simple mathematic relationships to determine a missing quantity in a mathematic expression, given the two remaining terms (including speed = distance/time, density = mass/volume, force = pressure × area, volume = area × height). ||
 * 9.g || Distinguish between linear and nonlinear relationships on a graph of data. ||