STANDARD 5.7 (PHYSICS): by Grade 8
Strands with Cumulative Progress IndicatorsA. Motion and Forces
- Use quantitative data to show that when more than one force acts on an object at the same time, the forces can reinforce or cancel each other producing a net (unbalanced) force that will change speed and/or direction of the object.
- Recognize that every object exerts a gravitational force on every
other object, and that the force depends on how much mass the objects
have and how far apart they are.
B. Energy Transformations
- Recognize that the sun is a major source of the Earth's energy and that solar energy includes visible, infrared and, ultraviolet radiation.
- Describe the nature of various forms of energy, including heat, light, sound, chemical, mechanical, and electrical and trace energy transformations from one form to another.
- Describe how heat can be conducted through materials or transferred across space by radiation and know that if the material is a fluid, convection currents may aid the transfer of heat.
- Show that light is reflected, refracted, or absorbed when it interacts with matter and that colors may appear as a result of this interaction.
