III Know the parts of the human body and their functions.
1 Know that bacteria and viruses are germs that affect the human body.
2 Describe the nutrients needed by the human body.
III Understand the structure of Earth, the solar system, and the universe, the interconnections among them, and the processes and interactions of Earth's systems.
I Know the structure of the solar system and the objects in the universe.
1 Describe the objects in the solar system (e.g., sun, Earth and other planets, moon) and their features (e.g., size, temperature).
2 Describe the relationships among the objects in the solar system (e.g., relative distances, orbital motions).
3 Observe that the pattern of stars stays the same as they appear to move across the sky nightly.
4 Observe that different constellations can be seen in different seasons.
5 Know that telescopes enhance the appearance of some distant objects in the sky (e.g., the moon, planets).
II Know the structure and formation of Earth and its atmosphere and the processes that shape them.
1 Know that Earth's features are constantly changed by a combination of slow and rapid processes that include the action of volcanoes, earthquakes, mountain building, biological changes, erosion, and weathering.
3 Know that air takes up space, is colorless, tasteless, and odorless, and exerts a force.
4 Identify how water exists in the air in different forms (e.g., in clouds and fog as tiny droplets; in rain, snow, and hail) and changes from one form to another through various processes (e.g., freezing/condensation, precipitation, evaporation).