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Plan and conduct investigations to determine the effect of placing objects made with different materials in the path of a beam of light.
Use tools and materials to design and build a device that uses light or sound to solve the problem of communicating over a distance.*
Make observations at different times of year to relate the amount of daylight to the time of year.
Measure and graph quantities to provide evidence that regardless of the type of change that occurs when heating, cooling, or mixing substances, the total weight of matter is conserved.
Ask questions to obtain information about the purpose of weather forecasting to prepare for, and respond to, severe weather.*
Use a model to represent the relationship between the needs of different plants and animals (including humans) and the places they live.
Obtain and combine information to describe climates in different regions of the world.
Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot.
Identify evidence from patterns in rock formations and fossils in rock layers to support an explanation for changes in a landscape over time.
Use information from several sources to provide evidence that Earth events can occur quickly or slowly.
Generate and compare multiple solutions to reduce the impacts of natural Earth processes on humans.*
Develop a model to describe that light reflecting from objects and entering the eye allows objects to be seen.