Earth's Layers and Features Unit Test Why are sand dunes commonly found along the coast? (1 point)
O There is a lot of wind to carry the particles
O Moving water is needed to deposit the particles on the river bed
C
O Heavy wave action is needed to move the sand
O The salt in the water is needed to hold the sand together

1. what is boyle’s law? • state the definition of the law in words. • what are the assumptions of boyle’s law? • write at least one mathematical equation that represents the law. • what can be calculated with boyle’s law? • using a gas-filled balloon as an example, describe what is happening to the gas molecules inside the balloon before and after you squeeze it.