Energy Conservation & Transfer Test

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied to it. It indicates how much a machine multiplies force.

Front

What happens to the potential energy of an object as it falls?

Back

The potential energy of an object decreases as it falls because it loses height relative to the ground.

Front

What is the energy transfer that occurs when a battery is used?

Back

The energy transfer is from Chemical Potential Energy (PE) to Electrical Energy.

Front

How do you calculate gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass (kg), g is acceleration due to gravity (9.8 m/s²), and h is height (m).

Front

What happens to the potential energy of an object when it is lifted?

Back

The potential energy of the object increases when it is lifted because it gains height.

Front

What is the formula for calculating mechanical advantage of an inclined plane?

Back

Mechanical advantage (MA) = Length of the incline / Height of the incline.

Front

What is the relationship between kinetic energy and potential energy in a falling object?

Back

As potential energy decreases during a fall, kinetic energy increases, conserving the total mechanical energy.

Front

What is chemical potential energy?

Back

Chemical potential energy is the energy stored in the bonds of chemical compounds, which can be released during a chemical reaction.

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy in the SI system is the Joule (J).

Front

What is the significance of the height in gravitational potential energy?

Back

Height is significant in gravitational potential energy because it directly affects the amount of energy an object has due to its position in a gravitational field.