Energy Work & Power

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How do you calculate the kinetic energy of a moving object?

Back

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is the mass of the object in kilograms and v is its velocity in meters per second.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What happens to heat energy when two objects at different temperatures come into contact?

Back

Heat energy always moves from the hotter object to the cooler object until thermal equilibrium is reached.

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

How much energy is required to raise the temperature of 1 gram of water by 1 degree Celsius?

Back

It takes 4.18 Joules of energy to raise the temperature of 1 gram of water by 1 degree Celsius.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

What is the difference between heat and temperature?

Back

Heat is the energy transferred between substances due to a temperature difference, while temperature is a measure of the average kinetic energy of the particles in a substance.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, such as gravitational potential energy.

Front

How do molecules behave at higher temperatures?

Back

At higher temperatures, molecules move faster and have more kinetic energy compared to those at lower temperatures.