The student will investigate and understand that the solar system is organized and the various bodies in the solar system interact. Key ideas include a) matter is distributed throughout the solar system; b) planets have different sizes and orbit at different distances from the sun; c) gravity contributes to orbital motion; and d) the understanding of the solar system has developed over time.
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Technological advances, breakthroughs in interpretation, and new observations continuously refine our understanding of the Earth and solar system.
The solar system is a set of interrelated and interdependent elements that are seamlessly connected through the flow of matter and energy. Characteristics of these elements within the solar system are determined by their composition.
In order to meet this standard, it is expected that students will
Gravitational interactions are attractive and depend on the masses of interacting objects. Gravity is the force that keeps the planets in motion around the sun. Gravity acts everywhere in the universe (6.2 c).
Similar standards in other grades
Mass and weight are not equivalent. Mass is the amount of matter in a given substance. Weight is a measure of the force due to gravity acting on a mass. Weight is measured in Newtons and mass in kilograms (PS.8 b).
A good example of the link between science and technology is how advances in microscopes have helped us investigate cells—the smallest part of living things—and how they work to sustain life processes (LS.2 a).
make connections among the components of the nature of science, their investigations, and the greater body of scientific knowledge and research (LS.2 a)
describe and sequence the major points in the development of the cell theory.
The development of the original cell theory can be attributed to the major discoveries of many notable scientists. The development of the cell theory has been dependent upon improvements in the microscope and microscopic techniques throughout the last four centuries.