Science - Hypothesis Writing

Resistance

The potential difference needed to push the current through the device (1 Coulomb of charge passing through per second)

Resistance calculation

Measure of the opposition to current flow

Current

Rate of movement of charge

Law of Conservation of Energy

Energy cannot be created or destroyed, it can only change froms

Potential Difference

Amount of energy transferred to a device per coulomb of charge

Power Source

Battery/cell

How Batteries Work

Batteries transform chemical energy into electrical energy through a series of chemical reactions

How electrons move

Electrons move from the positive terminal of the cell, to the negative terminal of the cell, around the circuit and back to the positive terminal

Dissipated Energy

When electrical energy passes through the grid, some of it is dissipated, making it wasted energy.

How does Dissipated energy happen in the electrical grid?

Some electrical energy never meets its destination as it is radiated off as thermal energy. This “waste” occurs because of the friction from particles colliding

Forming Research Questions

How does the… affect the…?

Independent Variable

Variable you are changing on purpose

Dependent Variable

Variable that changes due to the independent variable

Controlled Variables

Variables that need to stay constant throughout the experiment