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Eureka! chapter 3
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Description
Developing and Using Models
Disciplinary Core Ideas
Many characteristics of organisms are inherited from their parents.
Different organisms vary in how they look and function because they have different inherited information.
Energy is present whenever there are moving objects, sound, light, or heat. When objects collide, energy can be transferred from one object to another, thereby changing their motion. In such collisions, some energy is typically also transferred to the surrounding air; as a result, the air gets heated and sound is produced.
The sun is a star that appears larger and brighter than other stars because it is closer. Stars range greatly in their distance from Earth.
Possible solutions to a problem are limited by available materials and resources (constraints). The success of a designed solution is determined by considering the desired features of a solution (criteria). Different proposals for solutions can be compared on the basis of how well each one meets the specified criteria for success or how well each takes the constraints into account.
An object can be seen when light reflected from its surface enters the eyes.
Research on a problem should be carried out before beginning to design a solution. Testing a solution involves investigating how well it performs under a range of likely conditions.
Other characteristics result from individuals’ interactions with the environment, which can range from diet to learning. Many characteristics involve both inheritance and environment.
The environment also affects the traits that an organism develops.
Light also transfers energy from place to place.
Energy can also be transferred from place to place by electric currents, which can then be used locally to produce motion, sound, heat, or light. The currents may have been produced to begin with by transforming the energy of motion into electrical energy.