Unit 3 Energy Test Review

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat is transferred from a hotter object to a cooler one through molecular collisions.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through a vacuum.

Front

What is kinetic energy?

Back

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

Front

How do you calculate work done?

Back

Work done (W) is calculated using the formula W = F × d, where F is the force applied and d is the distance moved in the direction of the force.

Front

What is specific heat?

Back

Specific heat is the amount of heat required to raise the temperature of 1 kg of a substance by 1 °C. It is a property that varies between different materials.

Front

What is the formula for calculating temperature change?

Back

The formula for calculating temperature change (∆t) when heat (Q) is added is ∆t = Q / (m × c), where m is mass and c is specific heat.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy. When work is done on an object, energy is transferred to that object, resulting in a change in its kinetic or potential energy.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. For example, gravitational potential energy is calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the maximum kinetic energy point on a pendulum?

Back

The maximum kinetic energy of a pendulum occurs at the lowest point of its swing, where all potential energy has been converted to kinetic energy.