7.1: Energy provides the ability to do work and it can exist in many forms.

7.1.C 13: Explain how simple machines such as inclined planes, pulleys and levers are used to create mechanical advantage.

Ants on a Slant (Inclined Plane)
Levers
Pulleys

7.1.C 14: Describe how different types of stored (potential) energy can be used to make objects move.

Energy of a Pendulum
Inclined Plane - Sliding Objects
Potential Energy on Shelves
Roller Coaster Physics

7.2: Many organisms, including humans, have specialized organ systems that interact with each other to maintain dynamic internal balance.

7.2.C 15: Describe the basic structures of an animal cell, including nucleus, cytoplasm, mitochondria and cell membrane, and how they function to support life.

Cell Structure

7.2.C 16: Describe the structures of the human digestive, respiratory, and circulatory systems, and explain how they function to bring oxygen and nutrients to the cells and expel waste materials.

Circulatory System
Digestive System

7.3: Landforms are the result of the interaction of constructive and destructive forces over time.

7.3.C 18: Describe how folded and faulted rock layers provide evidence of the gradual up and down motion of the Earth’s crust.

Plate Tectonics

7.3.C 20: Explain how the boundaries of tectonic plates can be inferred from the location of earthquakes and volcanoes.

Plate Tectonics