Force, Motion and Energy STAAR Review

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object. It is the energy associated with the motion and position of an object.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion. It depends on the mass of the object and its velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a ball held at a height has gravitational potential energy.

Front

What is the effect of friction on motion?

Back

Friction is a force that opposes motion. It can slow down or stop moving objects.

Front

What is energy transformation?

Back

Energy transformation is the process of changing energy from one form to another, such as converting electrical energy into light energy in a light bulb.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electricity to flow, typically consisting of a power source, conductors, and a load (like a light bulb).

Front

What happens in a series circuit?

Back

In a series circuit, all components are connected in a single path. If one component fails, the entire circuit stops working.

Front

What happens in a parallel circuit?

Back

In a parallel circuit, components are connected across common points. If one component fails, the others can still operate.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity in a circuit. When the switch is closed, electricity flows; when open, it stops.

Front

What is the relationship between height and potential energy?

Back

The higher an object is positioned, the more potential energy it has due to gravity.