North Carolina State Science Standards — Grade 4

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Explain the cause of day and night based on the rotation of Earth on its axis.


Explain the monthly changes in the appearance of the moon, based on the moons orbit around the Earth.


Compare fossils (including molds, casts, and preserved parts of plants and animals) to one another and to living organisms.


Infer ideas about Earths early environments from fossils of plants and animals that lived long ago.


Give examples of how the surface of the earth changes due to slow processes such as erosion and weathering, and rapid processes such as landslides, volcanic eruptions, and earthquakes.


Give examples of changes in an organisms environment that are beneficial to it and some that are harmful.


Explain how animals meet their needs by using behaviors in response to information received from the environment.


Explain how humans can adapt their behavior to live in changing habitats (e.g., recycling wastes, establishing rain gardens, planting trees and shrubs to prevent flooding and erosion).


Explain how differences among animals of the same population sometimes give individuals an advantage in surviving and reproducing in changing habitats.


Classify substances as food or non-food items based on their ability to provide energy and materials for survival, growth and repair of the body.


Explain the role of vitamins, minerals and exercise in maintaining a healthy body


Explain how magnets interact with all things made of iron and with other magnets to produce motion without touching them


Explain how electrically charged objects push or pull on other electrically charged objects and produce motion.


Compare the physical properties of samples of matter (strength, hardness, flexibility, ability to conduct heat, ability to conduct electricity, ability to be attracted by magnets, reactions to water and fire).


Explain how minerals are identified using tests for the physical properties of hardness, color, luster, cleavage and streak.


Classify rocks as metamorphic, sedimentary or igneous based on their composition, how they are formed and the processes that create them.


Recognize the basic forms of energy (light, sound, heat, electrical, and magnetic) as the ability to cause motion or create change.


Recognize that light travels in a straight line until it strikes an object or travels from one medium to another, and that light can be reflected, refracted, and absorbed.